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- Increasing phenological asynchrony between spring green-up . . .
Species trends Over the 12 year period, green-up dates advanced significantly in 27 species’ breeding ranges, by a mean of 0 952 days year, and became later in four species breeding ranges by a
- Despite frog-killing disease, researchers discover new frog . . .
Catenazzi has worked in the cloud forests of southern Peru for nearly three decades — about 100 miles south of where the new species was discovered He’s witnessed firsthand the effects of the fungal disease At one time, he regularly saw two different, unique harlequin frog species while conducting his fieldwork
- Bird Population Decline Has Left One in Eight Species Threatened
Using data from the IUCN Red List, BirdLife International also found that 5,412 bird species around the world — representing 49 percent of the total bird species — are declining in population Additionally, 4,234 bird species (38 percent of the total bird species) are classified as stable, and only 659 bird species (6 percent) are increasing
- State of the World’s Birds 2022 paints most concerning . . .
One in eight species (or 1,409 species in total) are now threatened with extinction Nearly three billion birds are estimated to have been lost since 1970 in North America alone, and a further 600 million have been lost in the European Union since 1980, an area five times smaller
- Bird Migration Explorer - Audubon
Bird Migration Explorer is your guide to the heroic annual journeys made by over 450 bird species, and the challenges they face along the way Learn more about a species, the migratory birds at a specific location, or a conservation challenge birds face
- Pacific Ocean as the greatest theater of bird migration
Feb 27, 2025 — Researchers examined dozens of bird species in museum collections looking for differences in the feathers and bodies between birds that can fly and birds that can't They found
- The evolution of bird migration | Princeton University Press
To an earthbound species like humans, bird migration is nothing short of extreme A four-ounce Arctic tern can fly to Antarctica and back each year during a lifetime that spans 30 years Bar-tailed godwits can fly from Alaska to New Zealand in a single nonstop flight that lasts eight days
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