For example, findings from our study suggest that to conduct intensive control at discrete points (such as historic loggerhead shrike
nesting trees), control devices should be spaced at [less than or equal to] 20-m intervals (corresponding to the smallest, 0.03 ha, 50% KDE documented in CSW habitat) surrounding the nest site to ensure all rats in the area have at least one control device within their area of core usage.
The record of loggerhead shrike
populations in New York, and most of the northeast, clearly shows a species that expanded its range and prospered with the settlement of the state and the clearing of wooded land for agriculture.
The impact of migration on the evolution and conservation of an endemic North American passerine: Loggerhead Shrike
Relocating foxes from San Clemente Island was preferable to culling foxes in order to protect the loggerhead shrike
for the United States Navy, which owns San Clemente, San Nicholas, and San Miguel Islands.
The ontogeny of impaling behavior in the loggerhead shrike
, Lanius ludovicianus L.
Take the loggerhead shrike
, a gray-and-black bird the size of a stocky starl- ing, with a stout, downcurved beak.
The Navy's natural resources programs have dramatically benefitted the San Clemente loggerhead shrike
(Lanius ludovicianus mearnsi), once considered the most endangered bird in North America.
I chose to focus on American robin (Turdus migratorius), brown thrasher (Toxostoma rufum) and loggerhead shrike
(Lanius ludovicianus) because they were abundant and because their nests were relatively accessible.
The preserve will protect habitat for several at-risk species, including the zebra-tailed lizard (Callisaurus draconoides), the loggerhead shrike
(Lanius ludovicianus), and rare native plants.
At the eastern edge of the refuge, impaled insects and small rodents adorn the blades of large, 100-year-old yuccas called Spanish daggers (Yucca treculeana), compliments of a migratory bird, the loggerhead shrike
For the study, researchers studied footage of attacks by 37 loggerhead shrikes
involving live domestic black mice and other creatures.
Yucca brevifolia shelters orioles and owls; kestrels rest in the branches from hunting trips; and Loggerhead Shrikes
stab lizards on the spines, letting the meat ripen.