2018Program Report
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Entering New Waters at Pier 94 Leslie Weir
the newsletter of the golden gate audubon society // vol. 103 no. 4 fall 2019 EntEring nEw watErs at PiEr 94 leslie weir ore than a million individual shore- M birds rely on the San Francisco Bay for at least some portion of their annual lifecycle. The Bay Area is classified as a site of hemispheric significance for migra- tory shorebirds by the Western Hemisphere Shorebird Reserve Network, and the Ramsar Convention on Wetlands has designated San Francisco Bay as a site of international sig- nificance for migratory waterfowl. More than 1,000 species of birds, mammals, and fish rely on the San Francisco Bay Estuary—the centerpiece of our region. CONTINUED on page 5 American Avocet at Pier 94. Bob Gunderson long enough to be restored for his aston- ishing journey. Ornithologists discovered that Blackpoll Warblers have the longest migratory route of any New World warbler. Every fall, these tiny 12-gram birds make a nonstop transatlantic flight from upper Canada to South America. Then, the fol- lowing spring, they reverse migrate to their breeding grounds. A few hours later, I checked on this exquisite feathered jewel. He was no longer quiet. I could hear him bouncing against the box top in a frenzied urge to leap up and fly south. I let him go and off he went—toward the Statue of Liberty, a fitting testament to his fortitude. I hoped that I had helped him a little. Cindy Margulis Like this Blackpoll Warbler’s drive to Male Blackpoll Warbler. migrate during the fall season, this is our time of transition at GGAS. -
Genomic Variation Across the Yellow-Rumped Warbler Species Complex
Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2016 Genomic variation across the Yellow-rumped Warbler species complex Toews, David P L ; Brelsford, Alan ; Grossen, Christine ; Milá, Borja ; Irwin, Darren E Abstract: Populations that have experienced long periods of geographic isolation will diverge over time. The application of highthroughput sequencing technologies to study the genomes of related taxa now allows us to quantify, at a fine scale, the consequences of this divergence across the genome. Throughout a number of studies, a notable pattern has emerged. In many cases, estimates of differentiation across the genome are strongly heterogeneous; however, the evolutionary processes driving this striking pattern are still unclear. Here we quantified genomic variation across several groups within the Yellow-rumped Warbler species complex (Setophaga spp.), a group of North and Central American wood warblers. We showed that genomic variation is highly heterogeneous between some taxa and that these regions of high differentiation are relatively small compared to those in other study systems. We found that theclusters of highly differentiated markers between taxa occur in gene-rich regions of the genome and exhibitlow within-population diversity. We suggest these patterns are consistent with selection, shaping genomic divergence in similar genomic regions across the different populations. Our study also confirms previous results relying on fewergenetic markers that several of the phenotypically distinct groups in the system are also genomically highly differentiated, likely to the point of full species status. DOI: https://doi.org/10.1642/AUK-16-61.1 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-127199 Journal Article Published Version Originally published at: Toews, David P L; Brelsford, Alan; Grossen, Christine; Milá, Borja; Irwin, Darren E (2016). -
Birds Marsh/Tidal Grasslands Great Egret Common Yellowthroat Also Known As the Common Egret, Large a New World Warbler, They Are Abundant Egret, Or Great White Heron
/ Summer Birds Marsh/Tidal Grasslands Great Egret Common Yellowthroat Also known as the common egret, large A New World warbler, they are abundant egret, or great white heron. Up to 1m tall. breeders in North America, ranging from Distinguished from other egrets by its southern Canada to central Mexico. yellow bill and black legs and feet. Males They are small songbirds that have olive and females are identical in appearance. backs, wings and tails, yellow throats It has a slow flight, with its neck and chests, and white bellies. Adult retracted, characteristic of herons and males have black face masks. Females bitterns, and distinguishing them from are similar in appearance, but have paler storks, cranes, ibises, and spoonbills, underparts and lack the black mask. which extend their necks in flight. Killdeer Green Heron A medium sized plover. The adults have Relatively small. The neck is often pulled a brown back and wings, a white belly, in tight against the body. Adults have a and a white breast with two black bands. glossy, greenish-black cap, a greenish The rump is tawny orange. The killdeer back and wings that are grey-black frequently uses a “broken wing act” to grading into green or blue, a chestnut distract predators from the nest. During neck with a white line down the front, nesting season killdeer use open dry grey underparts and short yellow legs. uplands and meadows. Females tend to be smaller than males, and have duller and lighter plumage. The Grasshopper Sparrow green heron’s call is a loud and sudden A new addition to the park! This bird had kyow. -
Evolution of Bird Communication Signals: Transference Between Signals Mediated
bioRxiv preprint doi: https://doi.org/10.1101/142463. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY-NC 4.0 International license. 1 Evolution of bird communication signals: transference between signals mediated 2 by sensory drive 3 4 Oscar Laverde-R. 5 6 Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias 7 Biológicas, Universidad de los Andes. Bogotá, D. C. 8 [email protected] 9 Current address: Unidad de Ecología y Sistemática (UNESIS). Facultad de Ciencias, 10 Departamento de Biología, Pontificia Universidad Javeriana. Bogotá, D. C. 11 12 Michael J. Ryan 13 Smithsonian Tropical Research Institute, Balboa, Panama 14 Department of Integrative Biology, University of Texas at Austin, Austin. 15 [email protected] 16 17 Carlos Daniel Cadena 18 Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias 19 Biológicas, Universidad de los Andes. Bogotá, D. C. 20 [email protected] 21 22 23 24 25 1 bioRxiv preprint doi: https://doi.org/10.1101/142463. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. It is made available under a CC-BY-NC 4.0 International license. 26 Animals communicate using signals perceived via multiple sensory modalities 27 but usually invest more heavily in one of type of signal. This pattern, observed by 28 Darwin1 and many researchers since, led to development of the transfer 29 hypothesis (see also transferal effect2 and tradeoff hypothesis3,4), which predicts a 30 negative relationship between investment in different signaling modalities 31 dictated by the relative costs and benefits of each. -
Notes on the Natural History of Juneau, Alaska
Notes on the Natural History of Juneau, Alaska Observations of an Eclectic Naturalist Volume 2 Animals L. Scott Ranger Working version of Jul. 8, 2020 A Natural History of Juneau, working version of Jul. 8, 2020 Juneau Digital Shaded-Relief Image of Alaska-USGS I-2585, In the Public Domain Natural History of Juneau, working version of Jul. 8, 2020 B Notes on the Natural History of Juneau, Alaska Observations of an Eclectic Naturalist Volume 2: Animals L. Scott Ranger www.scottranger.com, [email protected] Production Notes This is very much a work under construction. My notes are composed in Adobe InDesign which allows incredible precision of all the elements of page layout. My choice of typefaces is very specific. Each must include a complete set of glyphs and extended characters. For my etymologies the font must include an easily recognized Greek and the occasional Cyrillic and Hebrew. All must be legible and easily read at 10 points. Adobe Garamond Premier Pro is my specifically chosen text typeface. I find this Robert Slimbach 1989 revision of a typeface created by Claude Garamond (c. 1480–1561) to be at once fresh and classic. Long recognized as one of the more legible typefaces, I find it very easy on the eye at the 10 point size used here. I simply adore the open bowls of the lower case letters and find the very small counters of my preferred two- storied “a” and the “e” against its very open bowl elegant. Garamond’s ascenders and decenders are especially long and help define the lower case letters with instant recognition. -
Evolution of Bird Communication Signals: Transference Between Signals Mediated
bioRxiv preprint doi: https://doi.org/10.1101/142463; this version posted May 26, 2017. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC 4.0 International license. 1 Evolution of bird communication signals: transference between signals mediated 2 by sensory drive 3 4 Oscar Laverde-R. 5 6 Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias 7 Biológicas, Universidad de los Andes. Bogotá, D. C. 8 [email protected] 9 Current address: Unidad de Ecología y Sistemática (UNESIS). Facultad de Ciencias, 10 Departamento de Biología, Pontificia Universidad Javeriana. Bogotá, D. C. 11 12 Michael J. Ryan 13 Smithsonian Tropical Research Institute, Balboa, Panama 14 Department of Integrative Biology, University of Texas at Austin, Austin. 15 [email protected] 16 17 Carlos Daniel Cadena 18 Laboratorio de Biología Evolutiva de Vertebrados, Departamento de Ciencias 19 Biológicas, Universidad de los Andes. Bogotá, D. C. 20 [email protected] 21 22 23 24 25 1 bioRxiv preprint doi: https://doi.org/10.1101/142463; this version posted May 26, 2017. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC 4.0 International license. 26 Animals communicate using signals perceived via multiple sensory modalities 27 but usually invest more heavily in one of type of signal. -
Part I - Coastal: 16 – 22 April 2013 Part Ii - Hill Country 23 April – 2 May 2013
Prothonotary Warblers were one of the commonest migrants throughout our time on the coast (Simon Mitchell) TEXAS PART I - COASTAL: 16 – 22 APRIL 2013 PART II - HILL COUNTRY 23 APRIL – 2 MAY 2013 LEADER: SIMON MITCHELL Texas is an enormous state, covering a larger area than the whole of the United Kingdom. With a wealth of different biomes and avifaunas separated across such a huge landscape it is often easier to separate birding these areas shorter manageable trips. As such the Birdquest Texas trip was very much a tour of two halves. Heading for the coast we stopped first at nearby Long-leaf pine forests where we encountered the endangered Red-cockaded Woodpecker and Bachman’s Sparrow as well as a variety of woodland birds. The rest of our first week was spend watching a dazzling array of migrants and shorebirds passing through the famous coastal sites of High Island and Sabine Woods. Here, we eagerly anticipated changes in the weather and noticed by-the-hour differences in the birds concentrated into a tiny area. One the second part of our trip we travelled West of San Antonio, across the Edward’s Plateau where the topography and Live Oak- woodland was reminiscent of Mediterranean cork-growing regions. Here was encountered two incredibly beautiful species almost endemic to Texas - Golden-cheeked Warbler and Black-capped Vireo. As we moved further west the scenery became gradually drier and we moved into open desert country. In a 1 BirdQuest Tour Report: Texas 2013 www.birdquest-tours.com bleak but spectacular landscape of Big Bend National Park the Chios Basin is a single huge caldera which rises out of the desert providing an oasis of woodland. -
2007 Field Operations Report 0
Long Point Bird Observatory 2007 Field Operations Report 0 2007 FIELD OPERATIONS REPORT MARCH 2008 STUART A. MACKENZIE Long Point Bird Observatory c/o Bird Studies Canada P.O. Box 160, 115 Front Rd. Port Rowan ON, Canada. N0E 1M0. Website: http://www.birdscanada.org/longpoint; E-mail: [email protected] Long Point Bird Observatory 2007 Field Operations Report 1 TABLE OF CONTENTS Introduction ........................................................................................................ 2 Migration Monitoring Program .......................................................................... 3 Spring 2007 Migration Summary ....................................................................... 4 Fall 2007 Migration Summary ............................................................................ 7 Monarch Butterfly Migration Monitoring ........................................................ 12 Tree Swallow Research ..................................................................................... 13 Vegetation Monitoring and Breeding Bird Censuses ..................................... 14 Doug Tarry Natural History Fund ................................................................... 15 Latin American Training Program ................................................................... 17 The Friends of Long Point Bird Observatory………………………………….18 Education Initiatives ........................................................................................ 19 Research Initiatives ......................................................................................... -
STABLE HYDROGEN ISOTOPE ANALYSIS of AMERICAN REDSTART RECTRICES Elior Anina, Alessandra Cerio, Ashilly Lopes, Yasmeen Luna, Lauren Puishys
2016 STABLE HYDROGEN ISOTOPE ANALYSIS OF AMERICAN REDSTART RECTRICES Elior Anina, Alessandra Cerio, Ashilly Lopes, Yasmeen Luna, Lauren Puishys A Major Qualifying Project submitted to the Faculty of Worcester Polytechnic Institute in partial fulfillment of the requirements for the Degree in Bachelor of Science in Biology and Biotechnology Project Advisor: Marja Bakermans, BBT Laboratory Advisor: Mike Buckholt Massachusetts State Ornithologist: Andrew C. Vitz This report represents work of WPI undergraduate students submitted to the faculty as evidence of a degree requirement. WPI routinely publishes these reports on its web site without editorial or peer review. For more information about the projects program at WPI, see http://www.wpi.edu/Academics/Projects Abstract Understanding avian migration patterns between breeding, stopover, and wintering sites is crucial for the creation of conservation efforts. Stable isotope analysis is rising in popularity due to its ability to track avian migration without the use of satellites and traditional banding methods. Hydrogen isotope signatures vary by latitude due to fractionation during evaporation of ocean water. As warblers molt on their breeding grounds, the hydrogen isotope signatures are incorporated into their growing feathers through trophic-level interactions. We used a stable hydrogen isotope analysis of American Redstart (Setophaga ruticilla) rectrices using feather samples collected from the Powdermill Avian Research Center in Pennsylvania. We found no significant difference in δD values and migration timing between the two sample years (2010 and 2011). A significant difference in migratory patterns between adult male and adult female warblers was present, where males appear to migrate before their female counterparts. This pattern may be a result of the need for females to recover after the breeding season and gain fat reserves before strenuous migration. -
Mexico: Oaxaca II 2018
Field Guides Tour Report Mexico: Oaxaca II 2018 Mar 17, 2018 to Mar 24, 2018 Cory Gregory & Jorge Montejo For our tour description, itinerary, past triplists, dates, fees, and more, please VISIT OUR TOUR PAGE. Overlooking the Oaxaca Valley is the breathtaking vista of Monte Albán, a view that has endoured for 2500 years. This tour, along with seeing a fun array of birds, visited several human history sites that gave us lasting memories. Photo by guide Cory Gregory. It was a luxury getting to explore the birds and human history sites from the convenience of one hotel but that's exactly what this Oaxaca tour is all about. We were surrounded by good food, fun people, lots of birds, and the thunderstorms even stayed away yielding relatively pleasant weather. We started out by exploring the waterbirds at Presa Piedra Azul, the reservoir that was dominated by Least Grebes and a variety of herons, while the shoreline was abuzz with Killdeer, Spotted Sandpipers, and a few American Pipits. Nearby, we got our first taste of Bridled Sparrows, Black-vented Orioles, and other dry-country species. Farther up the slopes above Teotitlán, we visited the switchbacks known as El Jilguero and Rio Verde where we added specialties like Mountain Trogon, Blue Mockingbird, and a fabulous Northern Pygmy-Owl that swooped in and gave us extended looks! On our second day, we ventured uphill to Cerro San Felipe stopping at Pollo Nino en route scoring us several Mexican endemics such as Red-headed Tanager, Golden Vireo, and Oaxaca Sparrow. Higher up, we entered the pine forests where, after lunch, we found a magical flock of birds including the range-restricted of Dwarf Jay, Gray-barred Wren, and, believe it or not, a pair of Long-tailed Wood-Partridge! We changed up the scenery again for our third day and went downslope, towards the coast, where we birded up a dry wash yielding a wide range of new species. -
The Evolution of Vocal Duets and Migration in New World Warblers (Parulidae)
1 The evolution of vocal duets and migration in New World warblers (Parulidae) 2 3 Liam R. Mitchell1,4, Lauryn Benedict2, Jakica Cavar1, Nadje Najar2, David M. Logue1,3 4 5 1 Department of Psychology, University of Lethbridge. 4401 University Drive West, Lethbridge, 6 AB T1K3M4, Canada. 7 2 School of Biological Sciences, University of Northern Colorado, 510 20th St., Greeley, CO 8 80639, USA 9 3 Departamento de Biología, Universidad de Puerto Rico. Mayagüez, PR 00682, USA 10 4 Corresponding author email: [email protected], daytime phone: 403 966 2050 11 12 13 14 ABSTRACT 15 Vocal duets occur when two individuals vocalize in temporal coordination. In birds, duet 16 participation functions to cooperatively defend shared resources, localize mates, and in some 17 species, guard the mate. Previous work indicates that duetting tends to co-evolve with a non- 18 migratory lifestyle, probably because the absence of migration facilitates greater cooperation 19 between mates. We examined the evolution of duetting and migration in New World warblers 20 (Parulidae), a group that has been largely ignored by duetting research. Of the 95 species in our 21 analysis, we found evidence of duetting in 19 (20%) species, and evidence of migration in 45 22 (47.4%) species. Ancestral character reconstruction indicated that the last common ancestor of 23 the New World warblers did not duet. Duetting evolved multiple times in this group, including 24 two early origins and several more recent origins. Migration was present in the last common 25 ancestor, and was lost several times. Both duetting and migration exhibit phylogenetic signal. -
Long Point Waterfowl and Wetlands Research Program
LONG POINT WATERFOWL AND WETLANDS RESEARCH PROGRAM Technical Report 1 April 2020 to 31 March 2021 By Douglas C. Tozer, PhD Port Rowan, ON P.O. Box/B.P. 160 (courier/ courier: 115 Front Street), Port Rowan, ON, Canada N0E 1M0 Phone/Tél. 519 586 3531 Fax/Téléc. 519 586 3532 birdscanada.org Common Loon Photo: Mark Peck P.O. Box/B.P. 160 (courier/ courier: 115 Front Street), Port Rowan, ON Canada N0E 1M0 Phone/Tél. 519 586 3531 Fax/Téléc. 519 586 3532 birdscanada.org Contents Summary .............................................................................................................................................................................................................. 1 Implanted satellite transmitters affect sea duck movement patterns at short and long timescales............................................................................................................................................................................................................. 2 Migratory connectivity of waterfowl using the Great Lakes .......................................................................................................... 3 Origins of harvested American Black Ducks: a stable isotope approach .................................................................................. 4 Source areas of Northern Pintails harvested in northeastern North America ....................................................................... 5 Assessing year-round habitat use by migratory sea ducks in a multi-species context reveals seasonal