We Finally Know How Bright Lights Affect Birds Flying at Night They use radar to detect high densities of birds, track how many are in the beams, and record vocalizations to measure stress levels and species composition If the count reaches a dangerous high, or there are more than 1,000 birds circling the site, they advise technicians to turn off the bulbs for 20 to 30 minutes to let the travelers disperse
21 U. S. Animals, Plants Declared Extinct - Center for . . . WASHINGTON— The U S Fish and Wildlife Service today finalized a rule removing 21 species from the list of threatened and endangered species under the Endangered Species Act because of extinction The extinct species include eight of Hawaiʻi’s precious honeycreepers, the bridled white-eye and little Mariana fruit bat of Guam, a Texas fish
Mapping Global Diversity Patterns for Migratory Birds Nearly one in five bird species has separate breeding and overwintering distributions, and the regular migrations of these species cause a substantial seasonal redistribution of avian diversity across the world However, despite its ecological importance, bird migration has been largely ignored in studies of global avian biodiversity, with few studies having addressed it from a macroecological
Native birds have vanished across the continent since . . . We focused on 72 species of birds faced with extinction today, including the Kangaroo Island glossy black cockatoo, regent honeyeater, and night parrot We found 530 million hectares, or 69%, of
North America-birds - Ornithology Avifaunal diversity varies dramatically throughout the world, with nearly 10,000 species of birds in virtually every terrestrial and aquatic habitat on earth North America has about 900 species of birds and Mexico 1026; of course there is considerable overlap
Phorusrhacidae - Wikipedia The external nares and antorbital fenestras (areas found in the nose) were found to be more square than triangular These all contribute to a skull that is more rectangular in view rather than triangular [25] The structure of the fossils also suggest that these birds may have been swifter than originally thought [25]
Media Release: Nature’s Dangerous Decline ‘Unprecedented . . . Plastic pollution has increased tenfold since 1980, 300-400 million tons of heavy metals, solvents, toxic sludge and other wastes from industrial facilities are dumped annually into the world’s waters, and fertilizers entering coastal ecosystems have produced more than 400 ocean ‘dead zones’, totalling more than 245,000 km2 (591-595) - a