DOCSLIB.ORG

Stereotyped and Plastic Song in Adult Indigo Buntings, Passerina Cyanea

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Stereotyped and Plastic Song in Adult Indigo Buntings, Passerina Cyanea Anim.Behav., 1991, A, 367-388 Stereotypedand plastic song in adult indigobuntings, Passerina cyanea DANIEL MARGOLIASH, CYNTHIA A. STAICER* & SUE A. INOUET Departmentof OrganismalBiology and Anatomy , The Universityof Chicago,Chicago, IL 60637, U.S.A. ( Received18 July 1990;initial acceptance4 September 1990; rtnalacceptance 10December 1990; MS. number t5835 ) Abstract.The vocal behaviourof indigo buntingswas studiedby monitoring individual malesin sound isolation boxeswith a computer-assistedsystem. Yearlings and older adults sang'adult plastic' songas well asstereotyped song. Distinguishing features ofadult plasticsong include: a largersyllable repertoire; variablesyllable order; emphasis of the syllablesthat appearin the terminalsequence of stereotypedsong; 'S-note' a high-frequency ofvariable morphology;calls; occasional production ofsyllables poorly formed, of intermediateform, or in combination;and low amplitude of delivery.Stereotyped and adult plastic songswere delivered in distinct bouts.Adult plasticsongs of indigo buntingsshare many of the character- istics ofearly plastic songsofyoung birds. Severalother extended-agelearners also exhibit a complex, variable,and low amplitudeadult singingbehaviour, sometimes described as subsong, in addition to loud stereotypedsong. Indigo buntings,and other speciesthat can learn new songsas adults,may retain into adulthood developmentalprocesses that in most specieslargely terminate with the onsetof stereotyped song. A dramatic event during song developmentin Thompson 1968;Williams & MacRoberts 1977; passerinebirds is the rapid transition from juvenile Feekes 1982). Such birds may require auditory plastic singing to a stereotyped,adult pattern feedback to maintain their songs (Nottebohm (reviewedin Marler & Peters 1982a).This tran- 1980).The similaritiesbetween juvenile and adult sition has important behaviouralimplications, plasticsong, and the possiblerole of adult plastic includingthe ability to competefor matesand terri- song in adult song learning have not beenexten- tories(e.g. McDonald 1989),as well as profound sively analysed.Because a bird with vocal experi- physiological implications, especially emanci- ence has developed an internal representation pation from auditory feedback(Konishi 1965a). betweenvocal gestureand produced sound, and Much of the vocalmaterial present in juvenilesing- has establisheda repertoire of sounds,this may ing is no longer expressedafter the emergenceof effect both the rate and process of subsequent crystallizedsong (Marler & Peters1982b). Whether songlearning. this material is completely lost remains unclear, To addressthese issues, we choseto studyindigo however,because birds often exhibit abbreviated buntings.This specieshas been the focusof exten- statesof variablesinging as they re-establishadult sivestudies examining the basicsinging behaviour, song in subsequentsprings (Marler 1956, 1970; song learning, adaptive significanceand cultural Mulligan 1966). evolution of song (Thompson 1972;Emlen 1972; The descriptionof song developmenthas been Payneet al. I 98l). In particular,yearlings (birds in largely derived from work with age-dependent their secondcalendar year of life) and, to a lesser learners,birds that usually do not change their extent,older adult birds sometimesengage in 'song songsas adults. In birds that modify song reper- matching' (Thompson 1970;Payne et al. 1981, toires as adults, there is evidencethat the plastic 1988).During songmatching a bird cancompletely song stageis extendedinto adulthood so that two changehis stereotypedsong to closelymimic the distinct types of song are maintained (Rice & song of a neighbouringadult (Payne l98l). This leadsto groupsof2-22 birds sharingthe samesong *Present address:Department of Biology, Dalhousie University,Halifax, Nova ScotiaB3H 4JI, Canada. (Payneet al. 1981,1988). fPresent address:712 Rose Lane, Matteson,lL 60M3, The singing of male indigo buntings has been U.S.A. classifiedinto threemajor typesof song.Territorial M03-3 472 I 9 | I 090367+ 22 503.00I 0 @l99l TheAssociation for theStudv of AnimalBehaviour ６ Z ″筋 α′』夕れαッわ″″,42 ,ヨ adultssing relatively simple stereotyped songs (also this time, birds caught as immatureswere in th€ir calledthe'advertising' song; Thompson 1968) and secondcalendar year and sowere called yearlings. occasionally sing more complex, longer songs. Sixadditional males, four yearlingsand two older Theselonger songs often incorporateextra syllable adults,were collected on 6-8 June 1989near Niles, typesbeyond those expressed in stereotypedsong. Michigan.The songsof all 1989birds were recorded Indigo buntings also sing low amplitude, long in thefield with standardtechniques prior to capture songswith 'squeaky'characteristics during staged (seePayne 1982).These birds were immediately territorial encounters (Emlen 1972; Thompson returned to the laboratory, housed in individual 1972).Squeaky songs are difficult to record in the sound isolation boxes and monitored. For 1989 field and have not beenextensively studied. Here, birds,the first songswere recorded within aslittle as we report that isolatedindigo buntingsin the lab- 3 daysofcapture, oratory commonly and spontaneouslysing an All birdsin IAC boxeswere housed in'standard' apparentlymore variable form of squeakysong. wire cagesmeasuring 45 x 35 x25 cm and main- Our analysisindicates that thesesongs have many tained on a 16:8h light:dark cycle. Any residual featuresin commonwith earlyplastic songs of criti- acoustic cross-talk betweenbooths during loud cal period learners,and we term it'adult plastic' vocalizations was masked by wide-band noise song.We note the similarity betweenthis and vari- ( - 80 dB) broadcastintothe room. Somebirds sang ous secondarysinging behaviour described for spontaneously,otherscame into full songonly after other speciesand discussthe possiblerole adult receivingtestosterone implants. The 1987 birds, plastic songmay play in the modification of adult movedfrom shorterdays (in the generalaviary) to stereotypedsongs. longerdays (in IAC boxes),werephotosensitive and presumablymaximally sensitiveto the effectsof METHODS testosteroneon singingrate, while the 1989birds, which had already experiencedlong days in the Bird Collection field, were presumably less sensitive (Nowicki & Two groupsof indigo buntingswere collected by Ball 1989).We did not analyseany songsfor 1987 mistnets.Twenty birdswerecollectedin Mississippi birds until a bird had achievedfull stereotyped during the October 1987southward migration, and songwhereas we recordedall songsfor 1989birds are termed 1987 birds. We collected 'immature' immediately after captur€. After recording indi- birds (a few months old), 'yearlings'(birds in their vidually isolated1987 birds, l0 socialpairings were secondcalendar year of life), and 'older adults' establishedthroughout the spring/summerof 1988 (birdsin their third calendaryear or later).These age by housing pairs in half-cages(a standard cage groupsare easilydistinguished on the basisofplu- divided in half by a hardwarecloth partition with mage,with yearlings(and Octoberimmatures) but I x I cm mesh) within IAC boxes. One pair of not older adults, exhibiting some brown feathers birds interactedvia an acousticlink but remained amongthe wing (primary)coverts (see Payne 1982). physicallyisolated in separateIAC boxes.Social Becausebuntings isolated during their first yearcan pairings were maintained up to severalmonths, developabnormal songs(Rice & Thompson 1968; after which birds wereisolated and recordedagain. Paynel98l), the1987 birdswerehousedthroughout Someindividuals were socially paired two or three theautumn of 1987inindividual wire cagesmeasur- times. In this paper, we report on the singing ing45 x 35 x 45 crn.The cages were kept in a general behaviourofisolated birds. Changes in songduring aviary where the birds could hear each other, and social pairings will be reported in a subsequent interactwithneighbours in adjacentcagesseparated paper. by 5 or more cm. The generalaviary, which could hold up to 75cages, also housed zebra finches, Tae- Song Recordingand Display niopygia guttam, and white-throated sparrows, Data Zonotrichia albicollis, and was maintained on a collection natural Chicago photoperiod. From January to Vocalizations were recorded by microphones August of 1988,small groups of thesebirds were (Realisticno. 33-201l) insidethe soundboxes, pro- movedinto soundattenuation booths (IAC no. AC- cessedlocally (AC coupling and gain), and driven l , with interior dimensionsof 57'5 x 40 x 35 crn)and differentially over 30-m cablesto the laboratory. In theirvocalbehaviourwasmonitored (see below). By the laboratory, the signalwas processed with four- Margoliash et al.: Adult plastic song in buntings 369 pole lowpassand highpassfilters, achievinga fre- coupled to a vector processor(CSPI Mini-Map quencyresponse ofthe electronicsof * 0.5dB from XL). Spectrogramswere generatedwith standard 1-9'5 kHz, and -24 dB at 500Hz and 20 kHz. The digital signalprocessing techniques (Oppenheim & incomplete high-frequency filtering resulted in Schafer 1975).Depending on choice of analysis someartefacts when the signalswere digitized (see parameters,it waspossible to createa displaysimi- below). Calibration was via a l-inch (2.5-cm) lar in physicalsize and quality to that producedby a Bruel & Kjaer microphone(no. 4145),a Hewlett- Kay analogSonagraph, or to displayspectrograms Packardwave analyser (no. 3581C),and computer with up to the full dynamicrange of the converter analysis.The frequencyresponse
Load more

Recommended publications
  • Birds of the East Texas Baptist University Campus with Birds Observed Off-Campus During BIOL3400 Field Course
    Birds of the East Texas Baptist University Campus with birds observed off-campus during BIOL3400 Field course Photo Credit: Talton Cooper Species Descriptions and Photos by students of BIOL3400 Edited by Troy A. Ladine Photo Credit: Kenneth Anding Links to Tables, Figures, and Species accounts for birds observed during May-term course or winter bird counts. Figure 1. Location of Environmental Studies Area Table. 1. Number of species and number of days observing birds during the field course from 2005 to 2016 and annual statistics. Table 2. Compilation of species observed during May 2005 - 2016 on campus and off-campus. Table 3. Number of days, by year, species have been observed on the campus of ETBU. Table 4. Number of days, by year, species have been observed during the off-campus trips. Table 5. Number of days, by year, species have been observed during a winter count of birds on the Environmental Studies Area of ETBU. Table 6. Species observed from 1 September to 1 October 2009 on the Environmental Studies Area of ETBU. Alphabetical Listing of Birds with authors of accounts and photographers . A Acadian Flycatcher B Anhinga B Belted Kingfisher Alder Flycatcher Bald Eagle Travis W. Sammons American Bittern Shane Kelehan Bewick's Wren Lynlea Hansen Rusty Collier Black Phoebe American Coot Leslie Fletcher Black-throated Blue Warbler Jordan Bartlett Jovana Nieto Jacob Stone American Crow Baltimore Oriole Black Vulture Zane Gruznina Pete Fitzsimmons Jeremy Alexander Darius Roberts George Plumlee Blair Brown Rachel Hastie Janae Wineland Brent Lewis American Goldfinch Barn Swallow Keely Schlabs Kathleen Santanello Katy Gifford Black-and-white Warbler Matthew Armendarez Jordan Brewer Sheridan A.
    [Show full text]
  • A Comprehensive Multilocus Assessment of Sparrow (Aves: Passerellidae) Relationships ⇑ John Klicka A, , F
    Molecular Phylogenetics and Evolution 77 (2014) 177–182 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Short Communication A comprehensive multilocus assessment of sparrow (Aves: Passerellidae) relationships ⇑ John Klicka a, , F. Keith Barker b,c, Kevin J. Burns d, Scott M. Lanyon b, Irby J. Lovette e, Jaime A. Chaves f,g, Robert W. Bryson Jr. a a Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Box 353010, Seattle, WA 98195-3010, USA b Department of Ecology, Evolution, and Behavior, University of Minnesota, 100 Ecology Building, 1987 Upper Buford Circle, St. Paul, MN 55108, USA c Bell Museum of Natural History, University of Minnesota, 100 Ecology Building, 1987 Upper Buford Circle, St. Paul, MN 55108, USA d Department of Biology, San Diego State University, San Diego, CA 92182, USA e Fuller Evolutionary Biology Program, Cornell Lab of Ornithology, Cornell University, 159 Sapsucker Woods Road, Ithaca, NY 14950, USA f Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146, USA g Universidad San Francisco de Quito, USFQ, Colegio de Ciencias Biológicas y Ambientales, y Extensión Galápagos, Campus Cumbayá, Casilla Postal 17-1200-841, Quito, Ecuador article info abstract Article history: The New World sparrows (Emberizidae) are among the best known of songbird groups and have long- Received 6 November 2013 been recognized as one of the prominent components of the New World nine-primaried oscine assem- Revised 16 April 2014 blage. Despite receiving much attention from taxonomists over the years, and only recently using molec- Accepted 21 April 2014 ular methods, was a ‘‘core’’ sparrow clade established allowing the reconstruction of a phylogenetic Available online 30 April 2014 hypothesis that includes the full sampling of sparrow species diversity.
    [Show full text]
  • North Texas Winter Sparrows Cheat Sheet *Indicates Diagnostic Feature(S)
    North Texas Winter Sparrows Cheat Sheet *Indicates diagnostic feature(s) Genus Spizella 1) American Tree Sparrow - “Average” bird 6.25 inches +/- - Long notched tail - *Thin streak-like rufous patch on the side of the breast - Two white wing bars, upper bar distinctly shorter - *Distinct dark spot on otherwise clear greyish breast - Rufous crown and eye-line on otherwise grey face - *Upper mandible noticeable darker than lower - Prefers brushy edges o Similar species; field sparrow (smaller and paler plumage) 2) Field Sparrow - Smaller bird 5.5 inches +/- “plump” - No streaking on pale grey breast some individuals may have faint reddish flanks - Long narrow tail - A lot of grey on the face, some individuals may have a faint darker grey or reddish eye streak - Two white wing bars, upper bar distinctly shorter - Rufous crown - White eye ring - *Pink bill; in combination with white eye ring and un-streaked breast - Open grasslands and woodland edges o Similar species; American Tree Sparrow (noticeably larger) 3) Chipping Sparrow - Smaller bird 5.5 inches - No streaking on plain grey breast and under parts - Rufous crown sometimes faintly streaked - Two white wing bars, upper bar distinctly shorter - *Dark eye-line coupled with lighter “eyebrow” stripe and rufous crown - Grey rump - Pink bill and legs - Common all over the place in winter o Similar species; Clay-colored Sparrow, a rare migrant Genus Ammodramus 4) Grasshopper Sparrow – a rare winter visitor - Small bird 5 inches - Thick “heavier” bill - Pointed, short tail compared to body
    [Show full text]
  • Melospiza Melodia) Along an Urban Gradient Andrew Bartlow1, Katie White1, and Jeffrey A
    The Relationship Between Hemosporidian Parasites and Song Sparrows (Melospiza melodia) Along an Urban Gradient Andrew Bartlow1, Katie White1, and Jeffrey A. Stratford1,2 1Department of Biology, Wilkes University, Wilkes-Barre, PA 2 [email protected] ABSTRACT Humans turn natural landscapes into complex mosaics, which include A. B. agriculture, urban centers, suburbs, and natural remnants. Consequently, interactions between organisms are likely to be altered including parasite- host interactions. Here, we investigate the relationship between song 50 The results show that the probability of sparrows (Melospiza melodia) and several hematozoan parasites in a hemosporidian parasite infection increases with complex landscape within and around Wilkes-Barre, PA. Fifty-four 40 35 increasing forest cover at a local scale (90m around a sparrows were captured in various habitats from urban centers to 28 sample point) and increasing urban cover at a larger relatively rural sites. From each bird, a blood smear was made and 30 scale (210m around a sample point). examined for 15 minutes (30 minutes total) by two observers noting presence/absence of hematozoans. Capture sites served as centers of 20 circular buffers from which we extracted the proportion of urban and 10 10 forest cover. Buffers had diameters of 90, 210 and 990m around each 10 RESULTS point. We created a number of logistic models with presence/absence as C. D. of Infections Percent • Plasmodium is the most frequently detected parasite (Fig. 3) the response variable and arcsine-square-root transformed landscape 0 • The top model includes small scale forest and medium scale variables as the explanatory variables. Using Akaiki Information Criterion Leucocytozoon Plasmodium Haemoproteus Other urban cover (Table 1) (AIC) to rank models, the top model included percent forest cover in 90m • Forest on a small scale within a slightly larger urban landscape buffers and percent urban in 210m buffers.
    [Show full text]
  • Updating the Distribution of the Sierra Madre Sparrow Xenospiza Baileyi Across Central Mexico: Historical Records, New Localities, and Conservation Perspectives
    VOLUME 15, ISSUE 1, ARTICLE 15 Ortega-Álvarez, R., R. Calderón-Parra, U. Martínez Molina, F. Martínez Molina, G. Martínez Molina, Y. Martínez Molina, A. Martínez Villagrán, J. Martínez Freire, R. Vásquez Robles, D. García Loaeza, J. Martínez García, S. García Loaeza, N. I. Garduño López, and L. A. Sánchez-González. 2020. Updating the distribution of the Sierra Madre Sparrow Xenospiza baileyi across central Mexico: historical records, new localities, and conservation perspectives. Avian Conservation and Ecology 15(1):15. https://doi.org/10.5751/ACE-01573-150115 Copyright © 2020 by the author(s). Published here under license by the Resilience Alliance. Research Paper Updating the distribution of the Sierra Madre Sparrow Xenospiza baileyi across central Mexico: historical records, new localities, and conservation perspectives Rubén Ortega-Álvarez 1, Rafael Calderón-Parra 2, Ulises Martínez Molina 2, Fredy Martínez Molina 2, Gabriel Martínez Molina 2, Yuridia Martínez Molina 2, Agustín Martínez Villagrán 2, Josué Martínez Freire 2, Rocío Vásquez Robles 2, Delfino García Loaeza 2, Jaciel Martínez García 2, Sarai García Loaeza 2, Nancy Isabel Garduño López 2 and Luis A. Sánchez-González 1 1Museo de Zoología "Alfonso L. Herrera," Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México, 2Brigada de Monitoreo Biológico Milpa Alta, San Pablo Oztotepec, Milpa Alta, Ciudad de México, México ABSTRACT. The Sierra Madre Sparrow (Xenospiza baileyi) is an endangered species microendemic to subalpine grasslands of central and northwestern Mexico. Given that land use change is highly dynamic in central Mexico, there is a need for a continuous monitoring of the distribution and conservation status of the species across the region.
    [Show full text]
  • 18 February 2015 – JB Invertebrates the Purpose of This Lab Is to Gain
    18 February 2015 – JB Invertebrates The purpose of this lab is to gain a better understanding of the complexity of invertebrates. The simplest invertebrates are sponges in the Porifera phylum. The rest of invertebrates have more complex tissue. Some of those have radial symmetry, meaning circular symmetry, and others have bilateral symmetry, meaning symmetrical from left to right. Invertebrates that live in the soil are called Anthropods, which is what we studied in this experiment. Most are very small, so they are classified as microanthropods. In this lab we first observed three types of worms, acoelomats, pseudocoelomates, and coelmates under a microscope; noting the complexity of their shape and movement. We then observed an organism from each of the five major classes: arachnida, diplopoda, chilopoda, insect, and crustacean. We observed their body parts, body segments, and the number of appendages. We then analyzed the invertebrates that we collected with our Berlese Funnel. We poured some of the sample into two separate petri dishes, one dish being the top of our liquid sample, and the other dish being the bottom. Then we observed and identified the anthropods found in the dish. Lastly, we drew conclusions about the types of invertebrates that might inhibit transect one, the marsh. Acoelomats, Pseudocoelomates, and Coelmates Worms Movement Structure Planaria None (dead), structure Three layered, 2mm requires minimal Ectoderm, mesoderm, movement endoderm Nemotodes Minimal movement 2 ectoderms, 2 mesoderms , 3 mm Annelida Movement minimal due to Muscle, with a radial structure resemblance to radial symmetry Berlese Invertebrates Organisms and Length in mm Number in Sample Description of top/bottom Organism Homoptera Hopper 3mm 1 Looks like a bee, - Top antenna and tail, Collembola Striped 5 mm 1 2 bold antenna, 6 Springtail - Top legs, hairy looking A termite 2 mm 4 Large abdomen, - Top many legs Nematoma 4mm 1 Rounded body, - Top worm like Isopoda 8 mm 3 Many legs, - Top segmented The size range of the organisms observed was 2mm to 8mm.
    [Show full text]
  • Illinois Birds: Volume 4 – Sparrows, Weaver Finches and Longspurs © 2013, Edges, Fence Rows, Thickets and Grain Fields
    ILLINOIS BIRDS : Volume 4 SPARROWS, WEAVER FINCHES and LONGSPURS male Photo © Rob Curtis, The Early Birder female Photo © John Cassady Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Mary Kay Rubey Photo © Rob Curtis, The Early Birder American tree sparrow chipping sparrow field sparrow vesper sparrow eastern towhee Pipilo erythrophthalmus Spizella arborea Spizella passerina Spizella pusilla Pooecetes gramineus Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder lark sparrow savannah sparrow grasshopper sparrow Henslow’s sparrow fox sparrow song sparrow Chondestes grammacus Passerculus sandwichensis Ammodramus savannarum Ammodramus henslowii Passerella iliaca Melospiza melodia Photo © Brian Tang Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Photo © Rob Curtis, The Early Birder Lincoln’s sparrow swamp sparrow white-throated sparrow white-crowned sparrow dark-eyed junco Le Conte’s sparrow Melospiza lincolnii Melospiza georgiana Zonotrichia albicollis Zonotrichia leucophrys Junco hyemalis Ammodramus leconteii Photo © Brian Tang winter Photo © Rob Curtis, The Early Birder summer Photo © Rob Curtis, The Early Birder Photo © Mark Bowman winter Photo © Rob Curtis, The Early Birder summer Photo © Rob Curtis, The Early Birder Nelson’s sparrow
    [Show full text]
  • An Efficient Method of Capturing Painted Buntings and Other Small Granivorous Passerines
    An Efficient Method of Capturing Painted Buntings and Other Small Granivorous Passerines Paul W. Sykes, Jr. USGS Patuxent Wildlife Research Center populations, among them research on annual Warnell School of Forestry and Natural Res. survival of the eastern population (Sykes unpub­ The University of Georgia lished data). As part of this research, captures of Athens, GA 30602 large numbers of buntings are necessary for [email protected] subsequent study. I developed a methodology to achieve this goal, which is herein described. ABSTRACT METHODS To study survival in the eastern breeding population of the Painted Bunting (Passerina ciris), I developed Painted Buntings are attracted to bird feeders a technique to capture a large sample of buntings provisioned with white prose millet (Panicum verg1) for color marking with leg-bands. This involved the creating a focal point where birds can be trapped. use of bird feeders and an array of three short mist Twenty study areas were selected randomly within nets located at 40 sites in four states, each site the breeding range of the eastern population, five meeting five specific criteria. In five years of mist each in Florida, Georgia, South Carolina, and North netting (1999-2003), 4174 captures (including Carolina. Within each study area, two sites were recaptures) of Painted Buntings were made in 3393 selected; thus there were 40 sites, ten per state. net-hours or 123 captures per 100 net-hours. The For practical reasons, each study site had to meet technique proved to be effective and efficient, and the following five criteria: may have broad application for capturing large (1) had a high density of buntings present, numbers of small granivorous passerines.
    [Show full text]
  • Swamp Sparrow Melospiza Georgiana the Swamp Sparrow Lives Mainly East of the Rocky Mountains but Is a Regular Rare Fall Migrant and Winter Visitor to California
    New World Sparrows and Buntings — Family Emberizidae 537 Swamp Sparrow Melospiza georgiana The Swamp Sparrow lives mainly east of the Rocky Mountains but is a regular rare fall migrant and winter visitor to California. It is well named, for it seeks freshwater marshes and the undergrowth of riparian woodland. Winter: The Swamp Sparrow is an annual visitor to San Diego County. The atlas period 1997–2002 was rather meager for the species, with only seven reported. Three per year is more typical. All wintering Swamp Sparrows have been found in the coastal lowland except for one at Lake Henshaw (G17) 20 February 1979 (AB 33:317, 1979). Typical sites are San Elijo Lagoon (L7; 1 April Photo by Kenneth Z. Kurland 2000, M. B. Mulrooney), San Dieguito Valley (M8; 28 December 1997, P. Unitt), Santee Lakes (P12; 9 February 538 New World Sparrows and Buntings — Family Emberizidae 2000, J. C. Worley), Lindo Lake (P14; 17 January–18 extend from 13 October (1957, near Lakeside, P14, AFN February 2002, M. B. Mulrooney), and the Dairy Mart 12:60, 1958) to 11 April (1975, O’Neill Lake, E6, A. Fries), Pond, Tijuana River valley (V11; 1–11 January 2000, G. except for the single known spring vagrant, singing along McCaskie). The maximum seen in one area is four in the San Diego River in Mission Valley (R9) 30 May 1992 the Tijuana River valley 18 January 1964 (G. McCaskie); (P. Unitt, AB 46:482, 1992). nine were seen countywide that winter. December 1990 Taxonomy: The two specimens from San Diego County, yielded two on the Oceanside Christmas bird count and from the east end of Sweetwater Reservoir (S13) 4 five on the San Diego count.
    [Show full text]
  • The Degree of Altriciality and Performance in a Cognitive Task Show Correlated Evolution
    RESEARCH ARTICLE The degree of altriciality and performance in a cognitive task show correlated evolution 1☯ 2☯ 2☯ Pilar ChiappaID , Suneeta SinghID , Francisco PellicerID * 1 Departamento de EtologõÂa, Instituto Nacional de PsiquiatrõÂa RamoÂn de la Fuente Muñiz, Ciudad de MeÂxico, MeÂxico, 2 Laboratorio de NeurofisiologõÂa Integrativa, Instituto Nacional de PsiquiatrõÂa RamoÂn de la Fuente Muñiz, Ciudad de MeÂxico, MeÂxico ☯ These authors contributed equally to this work. * [email protected] Abstract a1111111111 a1111111111 Previous comparative research on the evolution of cognition has tested what we call the a1111111111 ªaltricial intelligence hypothesisº. This posits that a relationship between evolutionary a1111111111 a1111111111 changes in the altricial period length and cognition exists across animal species. However, the evidence available thus far either comes from indirect measurements of cognition or has not been conclusive. We performed a phylogenetic analysis of published data from various sources on 31 homeothermic species to test for an evolutionary association between the degree of altriciality and a direct measure of self-control. For each species, the degree of OPEN ACCESS altriciality was determined based on the residual altricial period (i.e., the time from birth to Citation: Chiappa P, Singh S, Pellicer F (2018) The fledging in birds and to weaning in mammals) on lifespan. The percentage of success in the degree of altriciality and performance in a cognitive task show correlated evolution. PLoS ONE 13(10): cylinder task was the measure of self-control. Our results showed that the degree of altricial- e0205128. https://doi.org/10.1371/journal. ity covaried positively with the measure of self-control.
    [Show full text]
  • On the Sierra Madre Sparrow, Xenospiza Baileyi, of Mexico
    ON THE SIERRA MADRE SPARROW, XENOSPIZA BAILEYI, OF MEXICO ROBERTW. DICKERMAN,ALLAN R. PHILLIPS, AND DWAIN W. WARNER THE SierraMadre or Bailey'sSparrow, Xenospiza baileyi, was described as a new genus and speciesfrom the high mountainsof Durango and Jaliscoless than 35 yearsago (O. Bangs,Proc. •VewEngland Zool. Cl., 12: 85-88, 1931). It has sincebeen consideredrare, and even 19 years ago, when F. A. Pitelka (Condor, 49: 199-203, 1947) describeda new subspecies,only 11 specimenswere known, of whichhe had at handonly 1 from La Cima, Distrito Federal, and 3 from westernMexico. Today the populationfrom the sacatonbunch grass areas of La Cima, in the pass betweenthe Valleyof Mexicoand Cuernavaca,is well representedby series in the collectionsof Phillips and the University of Minnesota Museum of Natural History. These seriesinclude specimens in all the plumage stagesfrom stubby-tailedjuveniles to worn adults and those having recently completedthe prebasicmolt. Other specimensare scattered through several museumsin the United States. The populationof Du- rangois now representedby additionalspecimens in the collectionof the Robert T. Moore Laboratoryof Zoology,Occidental College. With the accumulationof this material,and notesfrom severalseasons' field work by the authors,it is a propitioustime to gather togetherthe information on this restricted endemic Mexican sparrow. ACI•N'OWLEDGEM. Ei•TS We wish to expressour appreciation to the curators of the following collections for permitting us to examine materials in their care: American Museum of Natural History, New York; Denver Museum of Natural History; Museum of Comparative Zoology, Harvard College, Cambridge, Massachusetts; Robert T. Moore Collection, Occidental College, Los Angeles, California; and Museum of Vertebrate Zoology, University of California, Berkeley, California.
    [Show full text]
  • SONG VARIATION in a POPULATION of INDIGO BUNTINGS T
    SONG VARIATION IN A POPULATION OF INDIGO BUNTINGS t WILLIAM L. TttOMPSON I• a previouspaper (Thompson,1968) I describedthe generalcharac- teristicsof the songsof several speciesof the genus Passerina. For a fuller understandingof a behavioral characteristic,just as in the case of a morphologicalfeature, it is importantto study the kind and amountof variation within a singlepopulation and, especiallyfor behavior,within a singleindividual. This paper describesthe songcharacteristics of the membersof a singlepopulation of Indigo Buntings,Passerina cyanea. A paper now in preparationwill describesong variation in individualIndigo Buntings. Male Indigo Buntings sing three rather distinct types of song: adver- tising song (in the senseof Borror, 1961), a squeakysong in intensive territorial defense,and flight song. This paper deals only with advertising song. A typical Indigo Bunting advertisingsong is composedof a series of sounds,or songfigures. The songin Figure 5A, for example,includes eight song figuresof five different types. I define the term song figure (Thompson,1968) as a soundor soundsthat producea single,complete, and distinct impressionto the human ear and form a distinct unit of a song. A songfigure may be composedof one or more continuoussounds or syllables. Each' male Indigo Bunting usually singsa regular sequence of several different figures. Figures may occur singly in the song, or they may be repeated. In a typical advertisingsong repeated figures occur together. The fixed sequenceof figuressung by each male is called a song pattern. METHODS The population of Indigo Buntings on which this study is based lived in an area of roughly 3 square miles on and near the Edwin S. George Reserve near Pinckney, Michigan.
    [Show full text]