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Macaulay Library

Macaulay Library - What We Do, Cornell Lab of Ornithology A multimedia resource for the study of animal behavior and biodiversity, setting the standard for the collection, preservation, and dissemination of natural history recordings since 1929 Help us capture sounds and images of rare wildlife from around the world. The Macaulay Library is the world’s leading scientific collection of biodiversity media, with more than 175,000 audio and 60,000 video recordings documenting the behavioral diversity of birds and other animals. The collections in our care inspire, educate, and entertain people around the globe. We provide training, expert consultation, and equipment that enable scientists, educators, and nature enthusiasts to discover and record the natural world. Explore the sound and video archive on the Macaulay Library website. Preservation and Curation As the stewards of an irreplaceable scientific resource, we ensure that every recording will remain available for future generations. The Macaulay Library's Online Archive of Biodiversity Media

Sibley Guides WhatBird Peterson Field Guides Featured Books Peterson Birds of North America app >>2011 BEST APP EVER AWARD<<MUST-HAVE BIRDING APP The ultimate birding resource for at home and in the field combining 10 Peterson Field Guides in an easy-to-use searchable format for iPad, iPhone, or iPod Touch. More Peterson Feeder Birds of North America app AN EXCITING NEW TOOL FOR BIRDERS! More On Our Website: Video Podcasts! Richly illustrated with paintings, photographs, and sound recordings of featured birds, these video podcasts are an entertaining and educational supplement to the Peterson Field Guide to Birds of North America. Family OverviewsSpecies ProfilesBiographyTutorials Special Features Who is Roger Tory Peterson? For more than 65 years, Peterson Field Guides have set the standard by which other field guides are measured. Learn More About Roger Tory Peterson

News and Features — eBird Sam Murray, June eBirder of the Month Please join us in congratulating Sam Murray of Augusta, GA, winner of the June 2017 eBird Challenge, sponsored by Carl Zeiss Sports Optics. Our June winner was drawn from eBirders who submitted 15 or more eligible checklists containing at least one breeding code in June. Sam’s name was drawn randomly from the 1,769 eligible eBirders who achieved the June challenge threshold. eBird Illustrated Checklists are here! You can now view a digital bird guide for any hotspot or region in the world: an Illustrated Checklist. eBird Server Maintenance on July 20 – website unavailable 03:30-08:00ET All of eBird will be unavailable on July 20 between 03:30-08:00ET (08:30-13:00GMT), due to regularly scheduled server and database maintenance. Edward W. The Cornell Lab of Ornithology invites applications for our Edward W. Bird Academy giveaway: How to Identify Bird Songs July eBirder of the Month Challenge Statistics, Machine Learning, Uncertainty

Understanding birds & weather: Fall birding basics — eBird American Redstarts are common fall migrants across much of the East, and are often found in big numbers on good migration days. Fall migration is an exciting time for birds. With migrants on the move your local birding site can be transformed from the static to the dynamic overnight, with a suite of new species to identify, an abundance of individuals, and a feeling that anything is possible. We realize some of our best birding days center on being at the right place at the right time. For many birders this is mere happenstance; perhaps a long-planned weekend trip to Cape May results in a great encounter with bird migration. But these fantastic interactions with bird migration can be reliably predicted with a basic understanding of birds and weather. Fall Migration Basics Fall migration starts earlier than most people realize, with many shorebirds on the move by late June, and the first landbirds heading south soon thereafter. Weather Basics Cold Fronts Figure 1. Conclusion Acknowledgements

Birds & Birding: Spring Migration All across North America, one of the sure signs that spring is on the way is the return of the migratory birds. If you are familiar with the birds in your area you know that the change can be abrupt: One morning, the bushes and trees around you are suddenly filled with singing birds that were not there just the day before. They have arrived during the night, following a combination of celestial (by the stars) and magnetic cues that are part of their genetic heritage. The most amazing part of this story is that these tiny birds may have flown thousands of miles to reach your yard, after spending the North American winter in Mexico, Central America, or South America, where the days remain warm and food is plentiful during our cold season. Many of the birds we consider "our birds," those that appear in field guides to the United States, actually spend less than half of their lives here. The spring migration, however, is urgent.

Migration of Birds Northern Prairie Wildlife Research Center General Considerations While certain flight directions are consistently followed by migratory birds, it is well to remember that the term "migration route" is a generalization, a concept referring to the general movements of a species, rather than an exact course followed by individual birds or a path followed by a species characterized by specific geographic or ecological boundaries. Even the records of banded birds usually show no more than the places of banding and recovery, and the details of the route actually traversed between the two points is interpolated. In determining migration routes, one must also constantly guard against the false assumption that localities with many grounded migrants are on the main path of migration and localities where no migrants are observed are off the main path. There is also considerable variation in the routes chosen by different species. Flyways and Corridors Narrow Routes Converging Routes W.W.