presence or absence was also fitted as a categorical variable and all others were continuous.
VALENCIA - After waiting out a cooler-than-usual start to spring, the Argentinian cliff swallows
are slowly flocking back and rebuilding their mud homes at College of the Canyons, where they will breed and visit through summer.
Breeding range expansion of the cliff swallow
in Northwest Louisiana.
vicarius on cliff swallow
reproduction has been documented in Nebraska (Brown & Brown 1986; 1998), Oklahoma (Loye & Carroll 1991) and Texas (Chapman & George 1991).
Use of Cliff Swallow
and Barn Swallow Nests by the Cave Bat, Myotis velifer, and the Free-tailed Bat, Tadarida brasiliensis.
Sikes and Arnold (1986) monitored cliff swallows
(Hirundo pyrrhonota) in east-central Texas and found nest success was 41% with RIFAs present, compared with 75% success when RIFAs were controlled in nesting areas the following year.
He and his team trace the positions of cliff swallows
as they battle for territory.
Swallow bugs have apparently spread from associations with cliff swallows
and are now widespread in barn swallow colonies in northeast Texas (Kopachena et al.
Now, their descendents snack at backyard bird feeders and aggressively evict flickers, bluebirds and other natives from their nests across the nation--just as house sparrows, introduced in 1853, harass native robins and displace bluebirds, purple martins and cliff swallows
from their nesting sites, according to a 1999 Cornell University report.
2 miles of roadway, was held up because of swallows - cliff swallows
and barn swallows, to be exact.
Biologist Ty Hedrick films the aerial gymnastics of cliff swallows
and other acrobatic fliers.
At this desert viewpoint, crickets chirp, crows squawk and peregrine falcons swoop past, hunting cliff swallows
1999), western kingbirds (Tyrannus verticalis; Bergin, 1997), barn and cliff Swallows
(Hirundo rustica and H.
Crossing the road has gotten easier for some cliff swallows
The mission has been attracting the little cliff swallows
since it was built in the late 1700s.