Pacific Northwest. Our goals were twofold: (1) consider how intensity of urbanization, canopy cover, and availability of bird feeders and bird baths influenced avian habitat use; and (2) quantify how daily changes in weather, air pollution, and human mobility influenced detection of birds. We ...
The Calliope Hummingbird, the smallest bird native to the United States and Canada, has a breeding range that extends from the northwestern United States into Canada and winters in Central America. Males are most notable for their striking magenta-striped throat, which they puff out during courtsh...
Northern Flickers are fairly big, tan woodpeckers with gray highlights, a white rump, and black markings. They mostly forage for ants on the ground in open and wooded areas. The red-shafted Northern Flickers in the west used to be considered a separate species from the yellow-shafted flickers...
This suggests that reductions in native eelgrass habitat may reduce the abundance and diversity of birds in Yaquina estuary. Our results suggest that a habitat based assessment approach is generally feasible for developing relative EPFs related to the presence of birds within estuarine systems....
The skies are filled with thousands of bird species (not to mention a few that prefer to stay on land), and each one has special adaptations, distinctive behaviors, and an evolutionary lineage that ultimatelystems from the dinosaurs. With such a dizzying variety of our feathered friends — liv...
The Broad-tailed Hummingbird faces challenges related to habitat loss and climate change, particularly as the high-elevation meadows they depend on are affected by shifts in temperature and flowering patterns. In Montana, efforts to conserve mountain habitats and promote native flowering plants have be...
birds in particular—and what we can all do to improve the situation. Planting native plants in our yards is an especially simple, effective approach to increasing vital habitat that birds and their prey depend on. We’re happy that so many people took time to read our post on this topic...
作者: CJ Ralph 摘要: Focuses on the diversity of Hawaii's native forest birds. Reduction by deforestation, diseases, predators and competition from exotic birds; Stories of evolutionary adaptation; Threat to native birds. DOI: 10.1080/00222938200770711 年份: 1982 收藏...
torice paddy, and thelaughing dove(S. senegalensis) throughout Africa, Arabia, and India, associated with native crops. Any species that can profit from agricultural expansion must be extremely well adapted—in a sense, preadapted—to such conditions and is likely to achieve pest status. Damage...
Even with a considerable effort by LaBastille to save the Atitlan Grebe, probably the introduction of non-native Largemouth Bass into the lake in late 1950s, doomed the bird The non-flying adults, and especially their young, fell easy prey. Anne LaBastille wrote a book about the Atitlan Gre...