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Migrating bird density was often reduced in the wake of storms, and this wake reduction was typically more pronounced for larger, more intense and faster- moving storms, particularly in eastern Nebraska. Wind conditions more strongly influence the distribution and density of migrating birds in fall ...
Alternatively, birds can initiate flight under wind regimes with crosswind components at the cost of being drifted away from optimal north-south migration routes. In-flight migrants can use one of two strategies in crosswinds: they can maintain a constant heading towards their destination and allow ...
No other transitions occurred alongside in other traits such as group size in the non-breeding season or body mass. The results suggest that larger group sizes have been beneficial in the evolution of long-distance migration in a large clade of birds. 展开 关键词:...
Lipid depletion is currently believed to be the primary factor limiting flight duration of migrating birds in North America, while the influence of water loss is thought to be small. Three migrating species of passerines, wood thrush (Hylocichla mustelina), Swainson's thrush (Catharus ustulatus)...
yielding approximately 1.6 million samples from 55 nights. Data collected indicated a greater propensity of birds to drift sideways at inland sites; birds flying near the Atlantic coast increasingly oriented and tracked westward away from the coast. The prediction that migrants compensate more for drift...
“As soon as I got to the buildings, the birds were everywhere on the sidewalk,” Breyer said. “Looking north, covered, south, covered, west, covered, the sidewalks were literally covered with birds.” NYC Audubon wants the owners of the World Trade Center towers and other buildings ...
Fascinating facts about migrating birds, including their travel distances, altitudes, and navigation. Learn how to support them with food, water, and nesting materials.
Spring migratory birds (Aves) extend the northern occurrence of blacklegged tick (Acari:Ixodidae). Twenty-six larvae and a nymph of the rabbit tick, Haemaphysalis leporispalustris (Packard) were found on 1 American robin, 2 Swainson's thrushes, ... M,Klich,M,... - 《Journal of Medical...
migrating birds making the long flight over Lake Erie from the United States to Canada drop to the nearest available ground after the crossing.—Kathryn K. Rushing The whales migrate between their feeding ground in the north and their breeding ground in the Caribbean. transitive to relocate (...