N a T U R E P R O G R a M S F I E L D T R I

Total Page:16

File Type:pdf, Size:1020Kb

N a T U R E P R O G R a M S F I E L D T R I EASTERN LONG ISLAND AUDUBON SOCIETY – From the Barrens to the Bays Formerly Moriches Bay Audubon, established 1967 November/December 2008 —Vol. XXXVIII No. 6 NATURE PROGRAMS J a Monday, November 3rd m e s NY'S SECOND BREEDING BIRD ATLAS G a l l BY KIMBERLEY CORWIN e t t o NewYork’s second Breeding Bird Atlas is imminent. The book documents changes in our bird distributions over the past 20 years. Some species have increased greatly while others have declined alarmingly. A few species are new breeders in the state while at least one has all but disappeared. Kimberley Corwin, who coordinated the Atlas project and co-edited the Atlas pub - lication, will show distribution maps and share some of the stories with us. Get a sneak peak into the book that NewYork's birders have been waiting years to see! The first feeding from A RedTale Kim is the Co-Editor of the Breeding Bird Atlas publication. She served as the Monday, December 1st James Galletto has been photographing Project Coordinator of the project from JAMES GALLETTO - A RED TALE nature for ten years and is known world its start in 1999. Kim holds a Master's de - wide for his action and behavior photog - James Galletto will give a program called gree in Ecology and Evolutionary Biology raphy. His images have graced the cover of A RedTale an intimate view inside the from the University at Albany. In her spare Natures Best Magazine and have hung on life of a Red-tail Hawk Family. We will fol - time, Kim enjoys hiking and birding. She is the walls of Smithsonian National Museum low their lives from egg to fledging to an avid road cyclist and mountain biker. of Natural History. hunting on their own. Nature programs and membership meetings are held the FIELD TRIPS first Monday of every month at the Quogue Wildlife Refuge. Saturday, November 1, 2008 Ocean Parkway east to Robert Moses These free programs JONES BEACH STATE PARK AND State Park. If time permits we walk on the are open to all. POINT LOOKOUT boardwalk to Fire Island Lighthouse. Con - (Directions are on our website.) tact your trip leader John McNeil at 7:15 pm – Nature Chat Leader: John McNeil 631.281.2623 at home or on the day of 7:30 pm – Chapter News the field trip, by cell 631.219.8947. This area is a catch basin for all types of 8:00 pm – Speaker birds, and holds many surprises. We will December 2008 try to catch the end of the fall migration December presents a special opportunity Saturday, November 22 & as well as the arrival of our winter visitors from the north. Do not forget to bring a for you to join one of the Christmas Bird Sunday. November 23 lunch. Counts (CBCs) and/or the Waterfowl Census. The leaders and territories are SEED SALE Meet at the West End #2 parking lot at listed on page 2. Please pick one and par - See Insert for 9 am. We will drive to Point Lookout, ticipate in this nationwide effort that has check the jetties, and come back to JFK been going on for over 100 years. There Order Form Memorial Wildlife Sanctuary. Then check are a few related stories inside. THE OSPREY - November/December 2008 2 Christmas Bird Counts & Winter Waterfowl Censuses John McNeil s the holiday season approaches, it can participate. All help is welcome. ever, to hunt for owls, some observers Ais once again time to think about Experienced birders are needed for each start a few hours before daylight and con - the winter bird counts. Each year, of the counts, but beginners are most wel - tinue for a while after dark. At least eight ELIAS members participate in a series of come. If you are not an experienced hours of field observation during daylight ten counts — five Christmas Bird Counts birder, field parties who are familiar with hours in a CBC circle is required for ac - (CBC) sponsored by the National the territory will help you learn your way ceptance of a CBC report. Audubon Society and five winter water - around. We hope that new observers will Field coverage is primarily done by some fowl censuses sponsored by the NY Or - find the counts to be as exciting as experi - combination of walking and driving, but bi - nithological Association. Dates and enced birders find them to be, and that cycles, boats, motorcycles, and other compilers for the counts are listed below. they will continue to participate in the fu - modes of transportation are also used. If you would like to participate as either a ture. This is the way we can we develop an The Winter Waterfowl Censuses have field observer or a feeder watcher in any adequate pool of skilled, committed ob - been compiled throughout the state of of the listed CBC’s, or as a participant in servers to continue the tradition. NewYork since 1955. These too are done any of the waterfowl censuses, please con - Feeder watchers who live within the count in assigned territories, but only birds such tact the compiler for the count(s). A fee circle are needed to provide additional as ducks, geese, swans, cormorants, grebes, will be collected from all observers over coverage by recording the number of indi - and coots are counted. These censuses are 18, to defray the cost of compiling the viduals and the variety of species that ap - usually done in mid-January by the same data and publishing for the CBC results. pear at the feeder during the count day. CBC compilers. If you would like to partic - There is no fee to participate in the Wa - ipate please contact a compiler. terfowl Censuses. Usually the compilers For the most part, counting begins as soon are very flexible and participants can bird as it is light enough to see (around 6:30 to Below are the people to contact to join with the group until they need to go. 7:00 am) and continues until it is too dark the CBC and the Waterfowl Census. So…please do not hesitate to ask if you to see anymore (around 5:00 pm). How - Count Date Compiler Contact Information Quogue to Water Mill CBC Sunday, Dec. 14th Steve Biasetti Hm 874-4684 Wk 765-6450 x205 [email protected] [email protected] Montauk CBC Saturday, Dec. 20th Hugh McGuinness 907-1709 [email protected] Sagaponack CBC Sunday, Dec. 21st Hugh McGuinness 907-1709 [email protected] Central Suffolk CBC Saturday, Dec. 27th Eileen Schwinn 516-662-7751 [email protected] Orient CBC Saturday, Jan 3rd, 2009 MaryLaura Lamont 722-5542 [email protected] Smith Point to Shinnecock Inlet Census Saturday, Jan. 17th Jay Kuhlman 878-4461 [email protected] Yaphank to Peconic Bay Census Midweek of Jan. 17th John McNeil 281-2623 [email protected] Montauk Point to Amagansett Census Saturday, Jan. 17th Hugh McGuinness 907-1709 [email protected] Reeves Bay to Noyack Bay Midweek of Jan. 17th John McNeil 281-2623 [email protected] Fresh Pond to Sag Harbor Midweek of Jan. 17th John McNeil 281-2623 [email protected] THE OSPREY - November/December 2008 3 WHY THE COUNT IS IMPORTANT Other Walks of Interest Saturday, November 1 rom December 14, 2008 through their numbers. Instead of firing a shotgun, MaryLaura Lamont, ELIAS Board Mem - FJanuary 5, 2009, tens of thousands of now we have an annual snapshot. Decades ber and NPS naturalist, will lead a walk volunteers throughout the Americas of data have added up to results envied by on November 1. Meet at 9 am at the will take part in an adventure that has be - other scientists who don’t enjoy such a eastern section of Robert Moses park - come a family tradition among genera - fleet of volunteer help, or creatures as ing Field 5. The walk will go to the Fire tions. Grandmothers and students, soccer easily seen and counted as birds. Island Lighthouse . moms and scientists, armed with binocu - “Counting is the first step in learning how Saturday, November 22 lars, bird guides and checklists will head environmental threats are affecting our Join MaryLaura Lamont, at Hal lockville out on an annual mission – often before birds," said LeBaron. The proverbial "ca - Museum , Sound Ave, Northville. There dawn. For over one hundred years, the de - naries in the coal mine," birds provide an will be a $5.00 fee charged to help Hal - sire to both make a difference and to ex - early warning indicator of the health of lockville educational school programs. perience the beauty of nature has driven the world we all share. dedicated people to leave the comfort of a Meet at 9 am. warm house in the middle of winter. “Last year these birds sent us a clear mes - Sunday, November 23 sage that their fate is determined by These Citizen Scientists are taking action human activity more than anything else,” MaryLaura will lead one more walk to for conservation. By participating in said Audubon President John Flicker when the William Floyd Estate . Enter by Audubon’s Christmas Bird Count, they announcing WatchList 2007. The using the Service Entrance gate, at 20 Wash - help scientists understand how birds are CBC and other data sources, WatchList ington Ave. in Mastic. Contact Mary - faring amid unprecedented environmental identified 178 species in the continental Laura at work (631) 399-2030 for challenges. The data they collect informs U.S. and 39 in Hawaii that are imperiled. details and info. Meet at 9 am the world about the State of Birds, and The report was based on the latest avail - provides the information we need to able research, including the Christmas Bird shape their future and ours.
Recommended publications
  • Final Recovery Plan Southwestern Willow Flycatcher (Empidonax Traillii Extimus)
    Final Recovery Plan Southwestern Willow Flycatcher (Empidonax traillii extimus) August 2002 Prepared By Southwestern Willow Flycatcher Recovery Team Technical Subgroup For Region 2 U.S. Fish and Wildlife Service Albuquerque, New Mexico 87103 Approved: Date: 018085 Disclaimer Recovery Plans delineate reasonable actions that are believed to be required to recover and/or protect listed species. Plans are published by the U.S. Fish and Wildlife Service, sometimes prepared with the assistance of recovery teams, contractors, State agencies, and others. Objectives will be attained and any necessary funds made available subject to budgetary and other constraints affecting the parties involved, as well as the need to address other priorities. Recovery plans do not necessarily represent the views nor the official positions or approval of any individuals or agencies involved in the plan formulation, other than the U.S. Fish and Wildlife Service. They represent the official position of the U.S. Fish and Wildlife Service only after they have been signed by the Regional Director or Director as approved. Approved Recovery plans are subject to modification as dictated by new findings, changes in species status, and the completion of recovery tasks. Some of the techniques outlined for recovery efforts in this plan are completely new regarding this subspecies. Therefore, the cost and time estimates are approximations. Citations This document should be cited as follows: U.S. Fish and Wildlife Service. 2002. Southwestern Willow Flycatcher Recovery Plan. Albuquerque, New Mexico. i-ix + 210 pp., Appendices A-O Additional copies may be purchased from: Fish and Wildlife Service Reference Service 5430 Governor Lane, Suite 110 Bethesda, Maryland 20814 301/492-6403 or 1-800-582-3421 i 018086 This Recovery Plan was prepared by the Southwestern Willow Flycatcher Recovery Team, Technical Subgroup: Deborah M.
    [Show full text]
  • Adult Brood Parasites Feeding Nestlings and Fledglings of Their Own Species: a Review
    J. Field Ornithol., 69(3):364-375 ADULT BROOD PARASITES FEEDING NESTLINGS AND FLEDGLINGS OF THEIR OWN SPECIES: A REVIEW JANICEC. LORENZANAAND SPENCER G. SEALY Departmentof Zoology Universityof Manitoba Winnipeg,Manitoba R3T 2N2 Canada Abstract.--We summarized 40 reports of nine speciesof brood parasitesfeeding young of their own species.These observationssuggest that the propensityto provisionyoung hasnot been lost entirely in brood parasitesdespite the belief that brood parasiticadults abandon their offspringat the time of laying.The hypothesisthat speciesthat participatein courtship feeding are more likely to provisionyoung was not supported:provisioning of young has been observedin two speciesof brood parasitesthat do not courtshipfeed. The function of this provisioningis unknown, but we suggestit may be: (1) a non-adaptivevestigial behavior or (2) an adaptation to ensure adequatecare of parasiticyoung. The former is more likely the case.Further studiesare required to determinewhether parasiticadults commonly feed their genetic offspring. ADULTOS DE AVES PARAS•TICASALIMENTANDO PICHONES Y VOLANTONES DE SU PROPIA ESPECIE: UNA REVISION Sinopsis.--Resumimos40 informes de nueve especiesde avesparasiticas que alimenaron a pichonesde su propia especie.Las observacionessugieren que la propensividadde alimentar a los pichonesno ha sido totalmente perdida en las avesparasiticas, no empecea la creencia de que los parasiticosabandonan su progenie al momento de poner los huevos.La hipttesis de que las especiesque participan en cortejo de alimentacitn, son milspropensas a alimentar los pichonesno tuvo apoyo.Las observacionesde alimentacitn a pichonesse han hecho en dos especiesparasiticas cuyo cortejo no incluye la alimentacitn de la pareja. La funcitn de proveer alimento se desconoce.No obstante,sugerimos que pueda ser: 1) una conducta vestigialno adaptativa,o 2) una adaptacitn parc asegurarel cuidado adecuadode los pi- chonesparasiticos.
    [Show full text]
  • Costa Rica: Birding the Edges Part I, the Deep South 2020
    Field Guides Tour Report Costa Rica: Birding the Edges Part I, the Deep South 2020 Jan 4, 2020 to Jan 13, 2020 Cory Gregory & Vernon Campos For our tour description, itinerary, past triplists, dates, fees, and more, please VISIT OUR TOUR PAGE. On the first part of this two-part tour, we explored the less-visited southern portions of Costa Rica. Even though we sampled just a mere portion of what this country has to offer, we tallied nearly 30 species of hummingbirds! One of the species we got to enjoy time and time again was the aptly-named Charming Hummingbird. This species, photographed here by guide Cory Gregory, was common at Esquinas Rainforest Lodge. Although January can be a dreary, wintery month up north, we found ourselves exploring the lush tropical country of Costa Rica; a perfect winter getaway! Although a small country, this Central American nation hosts a wealth of fascinating habitats due to its volcanoes, mountain ranges, lowlands, and all the elevations in between. We sampled these habitats on Part 1, which took us up into the breezy Talamanca highlands, down into the mid- elevation cloud forests, and finally down into the lowlands around the Panama border (we could even SEE Panama!). Even the weather performed well on Part 1 and we enjoyed clear skies for much of it. We started by climbing up into the Talamanca highlands where, even at our lunch table, we could see specialties like Volcano Hummingbird, Lesser Violetear, Fiery-throated Hummingbird, Long-tailed Silky-flycatcher, and others. We even climbed up to 11,000+ feet where we tracked down the range- restricted Volcano Junco and Timberline Wren, two awesome specialties! Talari Mountain Lodge, our home for the first couple nights, was a great home- base where even the dining hall balcony was a birding hotspot.
    [Show full text]
  • Biotic Resources of Indio Mountains Research Station
    BIOTIC RESOURCES OF INDIO MOUNTAINS RESEARCH STATION Southeastern Hudspeth County, Texas A HANDBOOK FOR STUDENTS AND RESEARCHERS Compiled by: Richard D. Worthington Carl Lieb Wynn Anderson Pp. 1 - 85 El Paso, Texas Fall, 2004 (Continually Reviewed and Updated) by Jerry D. Johnson (Last Update) 16 September 2010 1 TABLE OF CONTENTS INTRODUCTION - Pg. 3 COLLECTING IMRS RESOURCES – Pg. 4 POLICIES FOR THE PROTECTION OF RESOURCES – Pg. 4 PHYSICAL SETTING – Pg. 5 CHIHUAHUAN DESERT – Pg. 6 CLIMATE – Pg. 6 GEOLOGY – Pg. 8 SOILS – Pg. 12 CULTURAL RESOURCES – Pg. 13 PLANT COMMUNITIES – Pg. 14 LICHENS – Pg. 15 NONVASCULAR PLANTS – Pg. 18 VASCULAR PLANTS – Pg. 19 PROTOZOANS – Pg. 34 FLATWORMS – Pg. 34 ROUNDWORMS – Pg. 34 ROTIFERS – Pg. 35 ANNELIDS – Pg. 36 MOLLUSKS – Pg. 36 ARTHROPODS – Pg. 37 VERTEBRATES – Pg. 64 IMRS GAZETTEER – Pg. 80 2 INTRODUCTION It is our pleasure to welcome students and visitors to the Indio Mountains Research Station (IMRS). A key mission of this facility is to provide a research and learning experience in the Chihuahuan Desert. We hope that this manual will assist you in planning your research and learning activities. You will probably be given a short lecture by the station Director upon entering the station. Please pay attention as IMRS is not without potential hazards and some long-term research projects are underway that could be disturbed if one is careless. Indio Mountains Research Station came into being as a result of the generosity of a benefactor and the far-sighted vision of former UTEP President Haskell Monroe. Upon his death in 1907, the will of Boston industrialist Frank B.
    [Show full text]
  • Songbird Ecology in Southwestern Ponderosa Pine Forests: Forest Service a Literature Review
    Songbird Ecology in Southwestern Ponderosa Pine Forests: Forest Service A Literature Review This file was created by scanning the printed publication. Errors identified by the software have been corrected; however, some errors may remain. Block, William M.; Finch, Deborah M., technical editors. 1997. Songbird ecology in southwestern ponderosa pine forests: a literature review. Gen. Tech. Rep. RM-GTR-292. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 152 p. This publication reviews and synthesizes the literature about ponderosa pine forests of the Southwest, with emphasis on the biology, ecology, and conservation of songbirds. Critical bird-habitat management issues related to succession, snags, old growth, fire, logging, grazing, recreation, and landscape scale are addressed. Overviews of the ecol- ogy, current use, and history of Southwestern ponderosa pine forests are also provided. This report is one of the outcomes of the Silver vs ~hom'ascourt -settlement agreement of 1996. It is intended for planners, scientists, and conservationists in solving some of the controversies over managing forests and birds in the Southwest. Keywords: ponderosa pine, Southwest, songbirds Technical Editors: The order of editorship was determined by coin toss. William M. Block is project leader and research wildlife biologist with the Southwestern Terrestrial Ecosystem research work unit, Southwest Forest Sciences Complex, 2500 S. Pine Knoll, Flagstaff, AZ 86001. Deborah M. Finch is project leader and research wildlife biologist with the Southwestern Grassland and Riparian research work unit, Forestry Sciences Laboratory, 2205 Columbia SE, Albuquerque, NM 87106. Publisher: Rocky Mountain Forest and Range Experiment Station Fort Collins, Colorado You may order additional copies of this publication by sending your mailing informa- tion in label form through one of the following media.
    [Show full text]
  • Life History Account for Bronzed Cowbird
    California Wildlife Habitat Relationships System California Department of Fish and Wildlife California Interagency Wildlife Task Group BRONZED COWBIRD Molothrus aeneus Family: ICTERIDAE Order: PASSERIFORMES Class: AVES B527 Written by: S. Granholm Reviewed by: L. Mewaldt Edited by: R. Duke DISTRIBUTION, ABUNDANCE, AND SEASONALITY An uncommon summer visitor along Colorado River, arriving in April and departing by late July or early August (Garrett and Dunn 1981). Found primarily in open urban and cropland habitats, including farmyards. In other parts of range, commonly feeds beside grazing livestock, and occurs generally in open habitats such as croplands and pastures (Bent 1958). First recorded in California in 1951, and has expanded its range only slightly since then (Garrett and Dunn 1981). SPECIFIC HABITAT REQUIREMENTS Feeding: Feeds on seeds, grains, insects, other invertebrates; relative quantities eaten unknown. Forages primarily on ground, sometimes by turning over stones and other objects. Often feeds near grazing livestock, snatching insects that are flushed and taking advantage of the shade cast by these large animals; also picks invertebrates off livestock (Bent 1958). In Arizona, commonly forages in residential areas, golf courses, and parks (Robbins and Easterla 1981). Cover: Apparently roosts in trees, tall shrubs, and thickets of various kinds. Flocks have been found resting in trees and roosting in dense stands of giant cane (Bent 1958). Reproduction: This brood parasite builds no nest; lays eggs in nests of other birds, to be raised by host parents. Parasitizes fewer species than brown-headed cowbird, most often victimizing orioles (Friedmann 1929). In California, most common hosts are hooded and northern orioles (Garrett and Dunn 1981).
    [Show full text]
  • Host Choice of a Generaüst Brood Parasite, the Brown-Headed Cowbird (Mocothnrs Der)
    Host choice of a generaüst brood parasite, the brown-headed cowbird (MoCothnrs der) by Naomi Dawn Grant A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Biology School of Graduate Studies and Research Laurentian University Sudbury, Ontario O Naomi Dawn Grant 1998 National Library Bibliïthèque nationale du Canada Acquisitions and Acquisitions et Bibliographic Senrices services bibliographiques The author has granted a non- L'auteur a accorde une licence non exclusive licence ailowing the exclusive permettant à la National Library of Canada to Bibliothèque nationale du Canada de reproduce, loan, distrr-bute or sell reproduire, prêter, distriibuer ou copies of this thesis in microform, vendre des copies de cette thèse sous paper or electronic formats. la forme de microfiche/nlm, de reproduction sur papier ou sur format électronique. The author retains ownership of the L'auteur conserve la propriété du copyright in this thesis. Neither the droit d'auteur qui protège cette thése. thesis nor substantial extracts fkom it Ni la thése ni des extraits substantiels may be printed or otherwise de celle-ci ne doivent être imprimés reproduced without the author's ou autrement reproduits sans son permission. autorisation. The brood parasitic brown-headed cowbird (Molothrus ater) lays its eggs in the nests of many host species. Little is known about how cowbirds locate and select host nests. They may do so nondiscriminatorily (the shotgun parasitism hypothesis) or according to a cost-benefit trade-off (the host quality hypothesis). Evidence from the iiterature supporting the host quality hypothesis versus the shotgun hypothesis was reviewed.
    [Show full text]
  • Checklist of Species Within the CCBNEP Study Area: References, Habitats, Distribution, and Abundance
    Current Status and Historical Trends of the Estuarine Living Resources within the Corpus Christi Bay National Estuary Program Study Area Volume 4 of 4 Checklist of Species Within the CCBNEP Study Area: References, Habitats, Distribution, and Abundance Corpus Christi Bay National Estuary Program CCBNEP-06D • January 1996 This project has been funded in part by the United States Environmental Protection Agency under assistance agreement #CE-9963-01-2 to the Texas Natural Resource Conservation Commission. The contents of this document do not necessarily represent the views of the United States Environmental Protection Agency or the Texas Natural Resource Conservation Commission, nor do the contents of this document necessarily constitute the views or policy of the Corpus Christi Bay National Estuary Program Management Conference or its members. The information presented is intended to provide background information, including the professional opinion of the authors, for the Management Conference deliberations while drafting official policy in the Comprehensive Conservation and Management Plan (CCMP). The mention of trade names or commercial products does not in any way constitute an endorsement or recommendation for use. Volume 4 Checklist of Species within Corpus Christi Bay National Estuary Program Study Area: References, Habitats, Distribution, and Abundance John W. Tunnell, Jr. and Sandra A. Alvarado, Editors Center for Coastal Studies Texas A&M University - Corpus Christi 6300 Ocean Dr. Corpus Christi, Texas 78412 Current Status and Historical Trends of Estuarine Living Resources of the Corpus Christi Bay National Estuary Program Study Area January 1996 Policy Committee Commissioner John Baker Ms. Jane Saginaw Policy Committee Chair Policy Committee Vice-Chair Texas Natural Resource Regional Administrator, EPA Region 6 Conservation Commission Mr.
    [Show full text]
  • Species List
    Bird List of Honduras Compiled by R. Gallardo H = heard only Family: Tinamidae English Common Name Col. 1 Col. 2 Col. 3 Col. 4 Col. 5 Col. 6 Col. 7 Col. 8 Col. 9 Col. 10 Col. 11 Col. 12 1. Tinamus major Great Tinamou H 2. Crypturellus soui Little Tinamou HHHH 3. C. boucardi Slaty-breasted Tinamou Family: Anatidae 4. Dendrocygna autumnalis Black-bellied Whistling-Duck 5. D. bicolor Fulvous Whistling-Duck 6. Cairina moschata Muscovy Duck 7. Anas americana American Wigeon 8. A. discors Blue-winged Teal X 9. A. collaris Ring-necked Duck 10. A. affinis Lesser Scaup Family: Cracidae 11. Ortalis vetula Plain Chachalaca X X 12. Penelope purpurascens Crested Guan Family: Odontophoridae 13. Dendrortyx leucophrys Buffy-crowned Wood-Partridge 14. Colinus cristatus Spot-bellied Bobwhite X H 15. Odontophorus melanotis Black-eared Wood-Quail 16. O. guttatus Spotted Wood-Quail 17. Cyrtonyx ocellatus Ocellated Quail Family: Podicipedidae 18. Tachybaptus dominicus Least Grebe 19. Podilymbus podiceps Pied-billed Grebe Family: Pelecanidae 20. Pelecanus occidentalis Brown Pelican XX 1 Página 1 de 16 Col. 1 Col. 2 Col. 3 Col. 4 Col. 5 Col. 6 Col. 7 Col. 8 Col. 9 Col. 10 Col. 11 Col. 12 Family: Phalacrocoracidae 21. Phalacrocorax brasilianus Neotropic Cormorant X Family: Anhingidae 22. Anhinga anhinga Anhinga Family: Fregatidae 23. Fregata magnificens Magnificent Frigatebird X Family: Ardeidae 24. Tigrisoma mexicanum Bare-throated Tiger-Heron X 25. Ardea herodias Great Blue Heron 26. A. alba Great Egret X X X 27. Egretta thula Snowy Egret X 28. E. caerulea Little Blue Heron X 29.
    [Show full text]
  • Unusual Parasitism by the Bronzed Cowbird ’
    814 SHORT COMMUNICATIONS GOCHFELD,M., AND J. BURGER. 1983. Age related tebirds-a comparative review. Living Bird 14: differencesin piracy in frigatebirdsfrom Laughing 113-155. Gulls. Condor 83:79-82. OSORNO,J. L., R. TORRES,AND C. MACLAS GARCIA. HARRISON,C. S. 1990. Seabirds of Hawaii, natural 1992. Kleptoparasitic behavior of the Magnifi- history and conservation.Cornell Univ. Press,Ith- cent Frigatebird: sex bias and success.Condor 94: aca, NY. 692-698. HARRISON,C. S., T. S. HIDA, AND M. P. SEKI. 1983. VERNER,JARED. 1965. Flight behavior of the Red- Hawaiian seabirdfeeding ecology. Wildl. Monogr. footed Booby. Wilson Bull. 77~229-234. 85. VICKERY,J. A., AND M. DE L. BRCKKE. 1994. The NELSON,J. B. 1968. Galapagos, islands of birds. kleptoparasitic interactions between Great Friga- Longmans, London. tebirds and Masked Boobieson Henderson Island, NELSON, J. B. 1975. The breeding biology of friga- South Pacific. Condor 96:331-340. The Condor973814-815 0 The CooperChnithologkal Society 1995 UNUSUAL PARASITISM BY THE BRONZED COWBIRD ’ ETHAND. CLOTFELTER Department of Zoology, Universityof Wisconsin,Madison, WI 53706 TIMOTHYBRUSH Department of Biology Universityof Texas, Pan American, Edinburg, TX 78539 Key words: Molothrus aeneus; brood parasitism; Although the Yellow-billed Cuckoo is common in Coccyzusamericanus; Tyrannus verticalis; Tyrannus the Lower Rio Grande Valley, there are no records of couch& Cyanocorax yncas. brood parasitism of this speciesby Bronzed Cowbirds (Friedmann 1929.1963: Friedmann et al. 1977:Carter We report four unusualincidences
    [Show full text]
  • Nest Predation by Brown-Headed Cowbirds (Molothrus Ater)
    Western University Scholarship@Western Electronic Thesis and Dissertation Repository 3-28-2018 2:00 PM Nest Predation by brown-headed cowbirds (Molothrus ater) David C. Swan The University of Western Ontario Supervisor Zanette, Liana Y. The University of Western Ontario Graduate Program in Biology A thesis submitted in partial fulfillment of the equirr ements for the degree in Doctor of Philosophy © David C. Swan 2018 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Biology Commons Recommended Citation Swan, David C., "Nest Predation by brown-headed cowbirds (Molothrus ater)" (2018). Electronic Thesis and Dissertation Repository. 5274. https://ir.lib.uwo.ca/etd/5274 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. Abstract The reproductive success of parasites is entirely dependent on their ability to encounter suitable hosts. Obligate brood parasitic birds may increase host encounter rate, and consequently their reproductive output, if they cause unsuitable late-stage host nests to fail thereby stimulating the host to create another nest that they can parasitize. I tested key predictions of this ‘farming’ hypothesis for the brown-headed cowbird (Molothrus ater). I found evidence that cowbird attacks are not uncommon, a basic requirement of the hypothesis. Furthermore, I found multiple lines of evidence that cowbird attacks are not indiscriminate, but directed at non-parasitized nests and at those at a developmental stage too late to be suitable for parasitism.
    [Show full text]
  • Bronzed Cowbird Molothrus Aeneus Like Its Better-Known Relative the Brown-Headed Cowbird, the Bronzed Cowbird Invaded Southern California from the Southeast
    568 New World Blackbirds and Orioles — Family Icteridae Bronzed Cowbird Molothrus aeneus Like its better-known relative the Brown-headed Cowbird, the Bronzed Cowbird invaded southern California from the southeast. Unlike that of the Brown-headed, though, the pace of the Bronzed Cowbird’s invasion has been glacial. Though the Bronzed was first recorded in San Diego County in 1973, 30 years later it is still rare, with only 17 records. Most of these are from or near the Anza– Borrego Desert, and some resulted from efforts to trap Brown-headed Cowbirds. Like the Brown- headed, the Bronzed Cowbird is a brood parasite, Photo by Anthony Mercieca laying its eggs in the nests of other usually medium- sized songbirds. suitable hosts is no block to the Bronzed Cowbird’s fur- Breeding distribution: The Bronzed Cowbird was not ther increase. confirmed breeding in San Diego County 1997–2001, though likely it did breed. A male was displaying to two Migration: The Bronzed Cowbird is primarily a spring females 2.9 miles west of Jacumba (U27) in spring 1997 and summer visitor to southern California. With two (F. L. Unmack), then an apparent independent juvenile exceptions, San Diego County records extend from 13 (no red evident in eyes) was in the agricultural area of the April (1991, one at Lower Willows, D23, P. D. Jorgensen) north Borrego Valley (E24) 11 June 2001 (P. D. Jorgensen). to 17 July (1974, pair at Jacumba, AB 28:951, 1974). Of The only previous confirmation of the species’ reproduc- San Diego County’s 17 Bronzed Cowbird records, eight ing in the county was the juvenile seen with Brewer’s are from the Borrego Valley, one from Tamarisk Grove Blackbirds at Jacumba (U28) 13 July 1974 (J.
    [Show full text]