Familiar Migratory Songbirds
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Predation by Gray Catbird on Brown Thrasher Eggs
March 2004 Notes 101 PREDATION BY GRAY CATBIRD ON BROWN THRASHER EGGS JAMES W. RIVERS* AND BRETT K. SANDERCOCK Kansas Cooperative Fish and Wildlife Research Unit, Division of Biology, Kansas State University, Manhattan, KS 66506 (JWR) Division of Biology, Kansas State University, Manhattan, KS 66506 (BKS) Present address of JWR: Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106 *Correspondent: [email protected] ABSTRACT The gray catbird (Dumetella carolinensis) has been documented visiting and breaking the eggs of arti®cial nests, but the implications of such observations are unclear because there is little cost in depredating an undefended nest. During the summer of 2001 at Konza Prairie Bio- logical Station, Kansas, we videotaped a gray catbird that broke and consumed at least 1 egg in a brown thrasher (Toxostoma rufum) nest. Our observation was consistent with egg predation because the catbird consumed the contents of the damaged egg after breaking it. The large difference in body mass suggests that a catbird (37 g) destroying eggs in a thrasher (69 g) nest might risk injury if caught in the act of predation and might explain why egg predation by catbirds has been poorly documented. Our observation indicated that the catbird should be considered as an egg predator of natural nests and that single-egg predation of songbird nests should not be attributed to egg removal by female brown-headed cowbirds (Molothrus ater) without additional evidence. RESUMEN El paÂjaro gato gris (Dumetella carolinensis) ha sido documentado visitando y rompien- do los huevos de nidos arti®ciales, pero las implicaciones de dichas observaciones no son claras porque hay poco costo por depredar un nido sin defensa. -
Catbird, Gray
Mockingbirds and Thrashers — Family Mimidae 449 Mockingbirds and Thrashers — Family Mimidae Gray Catbird Dumetella carolinensis Though the Gray Catbird breeds west almost to the coast of British Columbia, it is only a rare vagrant to California—the bulk of the population migrates east of the Rocky Mountains. But the species is on the increase: of 107 reports accepted by the California Bird Records Committee 1884–1999, one third were in just the last four years of this interval. Similarly, of the 20 records of the Gray Catbird in San Diego County, 10 have come since initiation of the field work for this atlas in 1997. Migration: Half of San Diego County’s known cat- Photo by Anthony Mercieca birds have been fall migrants, occurring as early as 24 September (1976, one at Point Loma, S7, K. van Vuren, Cabrillo National Monument, Point Loma 11–17 July 1988 Luther et al. 1979). Besides eight fall records from Point (B. and I. Mazin, Pyle and McCaskie 1992) certainly was. Loma, there is one from the Tijuana River valley 7–8 November 1964 (the only specimen, SDNHM 35095), Winter: Three wintering Gray Catbirds have been report- one from a boat 15 miles off Oceanside 26 October 1983 ed from San Diego County, from Balboa Park (R9) (M. W. Guest, Bevier 1990), and two from Paso Picacho 16 December 1972 (P. Unitt) and from Point Loma 7 Campground (M20) 29 October 1988 (D. W. Aguillard, November 1983–13 March 1984 (V. P. Johnson, Roberson Pyle and McCaskie 1992) and 17 November 2002 (T. 1986) and 31 October 1999–21 January 2000 (D. -
Red Rock Lakes Total Species: National Wildlife Refuge for Birds Seen Not on This List Please Contact the Refuge with Species, Location, Time, and Date
Observer: Address: U.S. Fish & Wildlife Service Weather: Date: Time: Red Rock Lakes Total Species: National Wildlife Refuge For birds seen not on this list please contact the refuge with species, location, time, and date. Red Rock Lakes National Wildlife Refuge Birding Guide 27650B South Valley Road Lima, MT 59739 Red Rock Lakes National [email protected] email Wildlife Refuge and the http://www.fws.gov/redrocks/ 406-276-3536 Centennial Valley, Montana 406-276-3538 fax For Hearing impaired TTY/Voice: 711 State transfer relay service (TRS) U.S Fish & Wildlife Service http://www.fws.gov/ For Refuge Information 1-800-344-WILD(9453) July 2013 The following birds have been observed in the Centennial Valley and are Red Rock Lakes considered rare or accidental. These birds are either observed very infre- quently in highly restrictive habitat types or are out of their normal range. National Wildlife Refuge Artic Loon Black-bellied Plover Winter Wren Clark’s Grebe Snowy Plover Northern Mockingbird Red Rock Lakes National Wildlife Refuge is located in the scenic and iso- lated Centennial Valley of southwestern Montana, approximately 40 miles Great Egret Red-necked Phalarope Red-eyed Vireo west of Yellowstone National Park. The refuge has a vast array of habitat, Mute Swan American Woodcock Yellow-breasted Chat ranging from high elevation wetland and prairie at 6,600 feet, to the harsh alpine habitat of the Centennial Mountains at 9,400 feet above sea level. It Black Swan Pectoral Sandpiper Common Grackle is this diverse, marsh-prairie-sagebrush-montane environment that gives Ross’ Goose Dunlin Northern Oriole Red Rock Lakes its unique character. -
Belize), and Distribution in Yucatan
University of Neuchâtel, Switzerland Institut of Zoology Ecology of the Black Catbird, Melanoptila glabrirostris, at Shipstern Nature Reserve (Belize), and distribution in Yucatan. J.Laesser Annick Morgenthaler May 2003 Master thesis supervised by Prof. Claude Mermod and Dr. Louis-Félix Bersier CONTENTS INTRODUCTION 1. Aim and description of the study 2. Geographic setting 2.1. Yucatan peninsula 2.2. Belize 2.3. Shipstern Nature Reserve 2.3.1. History and previous studies 2.3.2. Climate 2.3.3. Geology and soils 2.3.4. Vegetation 2.3.5. Fauna 3. The Black Catbird 3.1. Taxonomy 3.2. Description 3.3. Breeding 3.4. Ecology and biology 3.5. Distribution and threats 3.6. Current protection measures FIRST PART: BIOLOGY, HABITAT AND DENSITY AT SHIPSTERN 4. Materials and methods 4.1. Census 4.1.1. Territory mapping 4.1.2. Transect point-count 4.2. Sizing and ringing 4.3. Nest survey (from hide) 5. Results 5.1. Biology 5.1.1. Morphometry 5.1.2. Nesting 5.1.3. Diet 5.1.4. Competition and predation 5.2. Habitat use and population density 5.2.1. Population density 5.2.2. Habitat use 5.2.3. Banded individuals monitoring 5.2.4. Distribution through the Reserve 6. Discussion 6.1. Biology 6.2. Habitat use and population density SECOND PART: DISTRIBUTION AND HABITATS THROUGHOUT THE RANGE 7. Materials and methods 7.1. Data collection 7.2. Visit to others sites 8. Results 8.1. Data compilation 8.2. Visited places 8.2.1. Corozalito (south of Shipstern lagoon) 8.2.2. -
1 Sexual Selection in the American Goldfinch
Sexual Selection in the American Goldfinch (Spinus tristis): Context-Dependent Variation in Female Preference Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Donella S. Bolen, M.S. Graduate Program in Evolution, Ecology, and Organismal Biology The Ohio State University 2019 Dissertation Committee: Ian M. Hamilton, Advisor J. Andrew Roberts, Advisor Jacqueline Augustine 1 Copyrighted by Donella S. Bolen 2019 2 Abstract Females can vary in their mate choice decisions and this variability can play a key role in evolution by sexual selection. Variability in female preferences can affect the intensity and direction of selection on male sexual traits, as well as explain variation in male reproductive success. I looked at how consistency of female preference can vary for a male sexual trait, song length, and then examined context-dependent situations that may contribute to variation in female preferences. In Chapter 2, I assessed repeatability – a measure of among-individual variation – in preference for male song length in female American goldfinches (Spinus tristis). I found no repeatability in preference for song length but did find an overall preference for shorter songs. I suggest that context, including the social environment, may be important in altering the expression of female preferences. In Chapter 3, I assessed how the choices of other females influence female preference. Mate choice copying, in which female preference for a male increases if he has been observed with other females, has been observed in several non-monogamous birds. However, it is unclear whether mate choice copying occurs in socially monogamous species where there are direct benefits from choosing an unmated male. -
American Goldfinch American Goldfinch Appearance Fairly Small, Slim, Somewhat Small-Headed Bird with a Fairly Long Notched Tail, and Short Conical Bill
American Goldfinch American Goldfinch Appearance Fairly small, slim, somewhat small-headed bird with a fairly long notched tail, and short conical bill. Sexually dimorphic. Male Female Pale pinkish-orange bill. Pale pinkish-orange bill. Black cap, bright yellow body with white undertail coverts; Greenish-yellow crown; bright yellow underparts with white undertail covers; dusky two white wing-bars on black wings. olive/yellow upper parts; two white wing-bars on black wings. Photos: Jackie Tilles (left), Omaksimenko (right) DuPage Birding Club, 2020 2 American Goldfinch Appearance Fairly small, slim, somewhat small-headed bird with a fairly long notched tail and short conical bill. Sexually dimorphic. Female (left) and male (right) Photo: Mike Hamilton DuPage Birding Club, 2020 3 American Goldfinch Appearance Immatures are olive/brown above, pale yellow below, shading to buff on sides and flanks; throat of males progressively brighter yellow with age. Flight feathers dark blackish-brown, males darker than females; wing-bars and feather tips buffy. Immature American Goldfinch Immature American Goldfinch Photos: Mike Hamilton DuPage Birding Club, 2020 4 American Goldfinch Sounds From The Cornell Lab of Ornithology: https://www.birds.cornell.edu/home/ SONGS Males sing a long and variable series of twitters and warbles that can be several seconds long. The notes and phrases are variable and repeated in a seemingly random order. Birds continue to learn song patterns throughout life. CALLS The American Goldfinch’s most common call is its contact call, often given in flight. It sounds like the bird is quietly saying po-ta-to-chip or per- chik’-o-ree with a very even cadence. -
Luscinia Luscinia)
Ornis Hungarica 2018. 26(1): 149–170. DOI: 10.1515/orhu-2018-0010 Exploratory analyses of migration timing and morphometrics of the Thrush Nightingale (Luscinia luscinia) Tibor CSÖRGO˝ 1 , Péter FEHÉRVÁRI2, Zsolt KARCZA3, Péter ÓCSAI4 & Andrea HARNOS2* Received: April 20, 2018 – Revised: May 10, 2018 – Accepted: May 20, 2018 Tibor Csörgo,˝ Péter Fehérvári, Zsolt Karcza, Péter Ócsai & Andrea Harnos 2018. Exploratory analyses of migration timing and morphometrics of the Thrush Nightingale (Luscinia luscinia). – Ornis Hungarica 26(1): 149–170. DOI: 10.1515/orhu-2018-0010 Abstract Ornithological studies often rely on long-term bird ringing data sets as sources of information. However, basic descriptive statistics of raw data are rarely provided. In order to fill this gap, here we present the seventh item of a series of exploratory analyses of migration timing and body size measurements of the most frequent Passerine species at a ringing station located in Central Hungary (1984–2017). First, we give a concise description of foreign ring recoveries of the Thrush Nightingale in relation to Hungary. We then shift focus to data of 1138 ringed and 547 recaptured individuals with 1557 recaptures (several years recaptures in 76 individuals) derived from the ringing station, where birds have been trapped, handled and ringed with standardized methodology since 1984. Timing is described through annual and daily capture and recapture frequencies and their descriptive statistics. We show annual mean arrival dates within the study period and present the cumulative distributions of first captures with stopover durations. We present the distributions of wing, third primary, tail length and body mass, and the annual means of these variables. -
Bird Species Checklist
6 7 8 1 COMMON NAME Sp Su Fa Wi COMMON NAME Sp Su Fa Wi Bank Swallow R White-throated Sparrow R R R Bird Species Barn Swallow C C U O Vesper Sparrow O O Cliff Swallow R R R Savannah Sparrow C C U Song Sparrow C C C C Checklist Chickadees, Nuthataches, Wrens Lincoln’s Sparrow R U R Black-capped Chickadee C C C C Swamp Sparrow O O O Chestnut-backed Chickadee O O O Spotted Towhee C C C C Bushtit C C C C Black-headed Grosbeak C C R Red-breasted Nuthatch C C C C Lazuli Bunting C C R White-breasted Nuthatch U U U U Blackbirds, Meadowlarks, Orioles Brown Creeper U U U U Yellow-headed Blackbird R R O House Wren U U R Western Meadowlark R O R Pacific Wren R R R Bullock’s Oriole U U Marsh Wren R R R U Red-winged Blackbird C C U U Bewick’s Wren C C C C Brown-headed Cowbird C C O Kinglets, Thrushes, Brewer’s Blackbird R R R R Starlings, Waxwings Finches, Old World Sparrows Golden-crowned Kinglet R R R Evening Grosbeak R R R Ruby-crowned Kinglet U R U Common Yellowthroat House Finch C C C C Photo by Dan Pancamo, Wikimedia Commons Western Bluebird O O O Purple Finch U U O R Swainson’s Thrush U C U Red Crossbill O O O O Hermit Thrush R R To Coast Jackson Bottom is 6 Miles South of Exit 57. -
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. -
Goldfinches and Finch Food!
A Purple Finch (left) en- Frequently Asked Questions joys Sunflower Hearts and About Finch FOOD: an American goldfinch (right, in winter plumage) B i r d s - I - V i e w munches on a 50/50 blend Q. What do Finches eat? of Sunflower heart chips A. Finches utilize many small grass seeds and and Nyjer Seed . flower seed in nature and are built to shell tiny Frequently Asked Questions seeds easily. At Backyard Bird feeders they will Q. Do Goldfinches migrate in winter? FAQ consume Nyjer Seed (traditionally referred to as A. In much of the US, including the Mid- “thistle” in the bird feeding industry, but now west, Goldfinch are year-round residents. about more correctly referred to as “Nyjer”). They also There are areas of the US that only experi- consume Black Oil sunflower Seed and LOVE ence Goldfinch in the Winter and parts of Goldfinches and Sunflower HEARTS whether whole or in fine northern US and Canada only have them chips. In recent years, more and more backyard during breeding season. Check out the nota- Finch Food! birders are feeding Sunflower hearts (which ble difference between the Goldfinch’s does not have a shell) either alone or combined plumage in the winter and during breeding with the traditional Nyjer seed (which DOES season on the cover of this brochure! Q. What other finches can I see at feeders used by Goldfinch? A. Year-round House Finch as well as non- finch family birds like chickadees, tufted Titmouse, and Downy Woodpecker will en- joy your finch feeder. -
Winter Bird Highlights 2013
FROM PROJECT FEEDERWAtch 2012–13 Focus on citizen science • Volume 9 Winter BirdHighlights Winter npredictability is one constant as each winter Focus on Citizen Science is a publication highlight- ing the contributions of citizen scientists. This is- brings surprises to our feeders. The 2012–13 sue, Winter Bird Highlights 2013, is brought to you by Project FeederWatch, a research and education proj- season broke many regional records with sis- ect of the Cornell Lab of Ornithology and Bird Studies U Canada. Project FeederWatch is made possible by the kins and nuthatches moving south in record numbers efforts and support of thousands of citizen scientists. to tantalize FeederWatchers across much of the con- Project FeederWatch Staff tinent. This remarkable year also brought a record- David Bonter breaking number of FeederWatchers, with more than Project Leader, USA Janis Dickinson 20,000 participants in the US and Canada combined! Director of Citizen Science, USA Kristine Dobney Whether you’ve been FeederWatching for 26 years or Project Assistant, Canada Wesley Hochachka this is your first season counting, the usual suspects— Senior Research Associate, USA chickadees, juncos, and woodpeckers—always bring Anne Marie Johnson Project Assistant, USA familiarity and enjoyment, as well as valuable data, Rosie Kirton Project Support, Canada even if you don’t observe anything unusual. Whichever Denis Lepage birds arrive at your feeder, we hope they will bring a Senior Scientist, Canada Susan E. Newman sense of wonder that captures your attention. Thanks Project Assistant, USA for sharing your observations and insights with us and, Kerrie Wilcox Project Leader, Canada most importantly, Happy FeederWatching. -
The Relationships of the Starlings (Sturnidae: Sturnini) and the Mockingbirds (Sturnidae: Mimini)
THE RELATIONSHIPS OF THE STARLINGS (STURNIDAE: STURNINI) AND THE MOCKINGBIRDS (STURNIDAE: MIMINI) CHARLESG. SIBLEYAND JON E. AHLQUIST Departmentof Biologyand PeabodyMuseum of Natural History,Yale University, New Haven, Connecticut 06511 USA ABSTRACT.--OldWorld starlingshave been thought to be related to crowsand their allies, to weaverbirds, or to New World troupials. New World mockingbirdsand thrashershave usually been placed near the thrushesand/or wrens. DNA-DNA hybridization data indi- cated that starlingsand mockingbirdsare more closelyrelated to each other than either is to any other living taxon. Some avian systematistsdoubted this conclusion.Therefore, a more extensiveDNA hybridizationstudy was conducted,and a successfulsearch was made for other evidence of the relationshipbetween starlingsand mockingbirds.The resultssup- port our original conclusionthat the two groupsdiverged from a commonancestor in the late Oligoceneor early Miocene, about 23-28 million yearsago, and that their relationship may be expressedin our passerineclassification, based on DNA comparisons,by placing them as sistertribes in the Family Sturnidae,Superfamily Turdoidea, Parvorder Muscicapae, Suborder Passeres.Their next nearest relatives are the members of the Turdidae, including the typical thrushes,erithacine chats,and muscicapineflycatchers. Received 15 March 1983, acceptedI November1983. STARLINGS are confined to the Old World, dine thrushesinclude Turdus,Catharus, Hylocich- mockingbirdsand thrashersto the New World. la, Zootheraand Myadestes.d) Cinclusis