Common loons ( Gavia immer ) were observed to show aberrant nesting behavior and low overall reproductive success when Hg concentrations in prey (small fish and crayfish) averaged > 0.3 g g 1 wet weight (Barr, 1986), levels known to occur in fish from many lakes in central Ontario. We ...
It is common in the eastern and southwestern USA, making it one of the most common birds of Arkansas. They are also present in southern Ontario, and in Mexico. Key Identifications: Crested bird with a conical orange-red beak and a black face. Males are red, females are grayish-brown and...
To evaluate whether urbanization affects the evolution of ecologically important phenotypic traits, we sampled plants at 52 sites along a 67 km urban–rural gradient in the Greater Toronto Area, Ontario, Canada (Fig.1) as described in Breitbart et al.49. This gradient was split into two parall...
vampire bat (Diphylla ecaudata), which is distributed mainly in cooler areas, up to the south of Texas historically and prefers bovine and equine blood; and the white-winged vampire bat (Diaemus youngi), the rarest species, found close to the equator, feeding mainly on birds (Nowak, 1999...
The common musk species is only considered endangered in Ontario, Canada. Raccoons, pollution, poaching and fishing lines, and traps are dangerous to turtles and eggs. Moreover, the state of Iowa has also listed musk turtles as threatened species. In ranges of Canada, wetlands that have less ...
.Common loons ( Gavia immer ) were observed to show aberrant nesting behavior and low overall reproductive success when Hg concentrations in prey (small fish and crayfish) averaged > 0.3 渭 g g -1 wet weight (Barr, 1986), levels known to occur in fish from many lakes in central Ontario....
1.A large bird(Corvus corax)of the Northern Hemisphere, having black plumage and a croaking cry. 2.Any of several similar birds of the genusCorvus,found in Africa, Australia, and southwestern North America. adj. Black and shiny:raven tresses. ...