Search results
Results from the WOW.Com Content Network
Based on Oscar Heinroth’s hypothesis that domestic chickens showed the greatest amount of fear towards long tailed, short necked birds flying overhead, [17] Tinbergen and Lorenz designed silhouettes that could represent a hawk like figure if moved in one direction, or a goose like figure if moved in the other direction. [17]
Eurasian cranes in a V formation (video) Birds flying in V formation. A V formation is a symmetric V- or chevron-shaped flight formation.In nature, it occurs among geese, swans, ducks, and other migratory birds, improving their energy efficiency, while in human aviation, it is used mostly in military aviation, air shows, and occasionally commercial aviation.
A common kingfisher (Alcedo atthis) that died after flying into a window. Studies analyzing window collisions across greater spatial scales reveal interesting trends in species composition, indicating that some birds are more vulnerable to collisions than others.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
A common pattern in North America is clockwise migration, where birds flying North tend to be further West, and flying South tend to shift Eastwards. Many, if not most, birds migrate in flocks. For larger birds, flying in flocks reduces the energy cost. Geese in a V formation may conserve 12–20% of the energy they would need to fly alone.
These elusive creatures are adept hunters of various prey: fish, frogs, mammals, birds, eggs, reptiles, and amphibians, and they have a penchant for fruits, insects, and forest-floor mushrooms.
The vampire finches of the Galápagos weren’t always the blood-sucking creatures we see today. Just half a million years ago, these birds arrived on Wolf and Darwin islands and entered into a ...
The common goldeneye or simply goldeneye (Bucephala clangula) is a medium-sized sea duck of the genus Bucephala, the goldeneyes. Its closest relative is the similar Barrow's goldeneye . [ 2 ] The genus name is derived from the Ancient Greek boukephalos ("bullheaded", from bous , "bull " and kephale , "head"), a reference to the bulbous head ...