From 1995 to 1998, we tracked movements of adult Swainson’s Hawks (Buteo swainsoni), using satellite telemetry to characterize migration, important stopover areas, and movements in the austral summer. We tagged 46 hawks from July to September on their nesting grounds in seven U.S. states and two Canadian provinces. Swainson’s Hawks followed three basic routes south on a broad front, converged along the east coast of central Mexico, and followed a concentrated corridor to a communal area in central Argentina for the austral summer. North of 20°N, southward and northward tracks differed little for individuals from east of the continental divide but differed greatly (up to 1700 km) for individuals from west of the continental divide. Hawks lef...
Long-distance migratory aerial insectivores are among the most threatened groups of birds breeding i...
Abstract ∙ Several species of raptors that breed in North America migrate to the southern hemisphere...
Birds exhibit flexible movement responses to environmental variation across the annual cycle, and th...
Swainson’s hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
During recent years, predictive modelling techniques have been increasingly used to identify regiona...
Swainson’s hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
We examined the use of agricultural habitats by Swainson\u27s Hawks\u27 (Buteo swainsoni) in La Pamp...
Swainson's hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
I compared nesting success and productivity of Swainson’s Hawks nesting in suburban and agricultural...
In recent years, anthropogenic conversion of grassland habitat has raised concerns about the status ...
The White-throated Hawk Buteo albigula is one of the most abundant migratory raptors in the Austral-...
It has been suggested that declines in breeding populations of Swainson's hawks (Buteo swainsoni) in...
Natural variation in migratory strategies across the range of the American Kestrel (Falco sparverius...
Swainson’s hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
Migration stopover resources, particularly riparian habitats, are critically important to landbirds ...
Long-distance migratory aerial insectivores are among the most threatened groups of birds breeding i...
Abstract ∙ Several species of raptors that breed in North America migrate to the southern hemisphere...
Birds exhibit flexible movement responses to environmental variation across the annual cycle, and th...
Swainson’s hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
During recent years, predictive modelling techniques have been increasingly used to identify regiona...
Swainson’s hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
We examined the use of agricultural habitats by Swainson\u27s Hawks\u27 (Buteo swainsoni) in La Pamp...
Swainson's hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
I compared nesting success and productivity of Swainson’s Hawks nesting in suburban and agricultural...
In recent years, anthropogenic conversion of grassland habitat has raised concerns about the status ...
The White-throated Hawk Buteo albigula is one of the most abundant migratory raptors in the Austral-...
It has been suggested that declines in breeding populations of Swainson's hawks (Buteo swainsoni) in...
Natural variation in migratory strategies across the range of the American Kestrel (Falco sparverius...
Swainson’s hawks (Buteo swainsoni) are long-distance migratory raptors that nest primarily in isolat...
Migration stopover resources, particularly riparian habitats, are critically important to landbirds ...
Long-distance migratory aerial insectivores are among the most threatened groups of birds breeding i...
Abstract ∙ Several species of raptors that breed in North America migrate to the southern hemisphere...
Birds exhibit flexible movement responses to environmental variation across the annual cycle, and th...