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  • The Basics of Bird Migration: How, Why, and Where
    Canada Geese by Brad Imhoff Macaulay Library Originally published January 2007; updated August 2021 Geese winging their way south in wrinkled V-shaped flocks is perhaps the classic picture of migration—the annual, large-scale movement of birds between their breeding (summer) homes and their nonbreeding (winter) grounds
  • The Remarkable Adaptations of Birds to Their Environment
    It is widely accepted that the first bird, Archaeopteryx lithographica, evolved approximately 150 million years ago Since then, many adaptations have been sculpted by natural selection, making birds the unique group they are today These adaptations help birds to survive and thrive in all environments, on every area of the planet
  • Search, All About Birds, Cornell Lab of Ornithology
    Detailed information for more than 600 North American bird species, including ID help, browse by shape and taxonomy, and deeper articles
  • Penguin Fact Sheet | Blog | Nature - PBS
    There are 18 species of penguins that live almost exclusively in the Southern Hemisphere, with only one species, the Galápagos penguin, found north of the Equator Penguins vary in size and
  • Urban evolution: How species adapt to survive in cities
    In a 2017 paper, for example, Brans and her coworkers took populations of water fleas from a range of habitats — some more rural and some more urban — and reared them for many generations before testing their ability to survive in urban-temperature water and rural-temperature water
  • Why Birds Hit Windows—and How You Can Help Prevent It
    For birds, glass windows are worse than invisible By reflecting foliage or sky, they look like inviting places to fly into And because the sheer number of windows is so great, their toll on birds is huge Up to about 1 billion birds die from window strikes in the U S each year, according to a 2014 study Photo by Susan Spear Cornell Lab
  • Factors underlying bird community assembly in anthropogenic . . .
    In the Grassland, we recorded a total of 2773 individuals belonging to 92 species: 333 individuals of 46 species in natural habitats, 787 individuals of 50 species in cattle pastures, 392





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