CAN SUPPLEMENTAL FORAGING PERCHES ENHANCE HABITAT FOR ENDANGERED SAN CLEMENTE LOGGERHEAD SHRIKES?
نویسندگان
چکیده
منابع مشابه
Population structure of loggerhead shrikes in the California Channel Islands.
The loggerhead shrike (Lanius ludovicianus), a songbird that hunts like a small raptor, maintains breeding populations on seven of the eight California Channel Islands. One of the two subspecies, L. l. anthonyi, was described as having breeding populations on six of the islands while a second subspecies, L. l. mearnsi, was described as being endemic to San Clemente Island. Previous genetic stud...
متن کاملGenetic differences between the endangered San Clemente Island loggerhead shrike Lanius ludovicianus mearnsi and two neighbouring subspecies demonstrated by mtDNA control region and cytochrome b sequence variation
We investigated mtDNA sequence variation in five populations of the loggerhead shrike Lanius ludovicianus, representing four subspecies, including the San Clemente loggerhead shrike L. l. mearnsi, a critically endangered California Channel Island endemic. Variability in 200 bp of control region and 200 bp of cytochrome b was extremely low, and defined four haplotypes. Strong structure was appar...
متن کاملHabitat selection of woodchat shrikes Lanius senator during spring stopover is related to foraging strategy
Every spring a huge number of passerines cross the Sahara Desert and the Mediterranean Sea on their way to their breeding grounds. Stopover sites after such extended barriers where birds can rest, refuel, and find shelter from adverse weather, are of crucial importance for the outcome of their migration. Stopover habitat selection used by migrating birds depends on landscape context, habitat pa...
متن کاملLandscape and Fine Scale Habitat Associations of the Loggerhead Shrike
-This study was conducted to determine landscape and fine-scale vegetative variables associated with breeding Loggerhead Shrikes (Lanius ludovicianus) on Fort Riley Military Reservation, Kansas. Because Fort Riley is an Army training site, the influences of training disturbance to the vegetation, and range management practices on bird habitat patterns were also investigated. Breeding birds were...
متن کاملTesting a GIS model of habitat suitability for a declining grassland bird.
Demand for information that can be used to manage loggerhead shrikes has recently increased because of concern over declining populations and loss of open, non-forested habitat. A previously-developed habitat model was modified to predict shrike habitat quality on Fort Riley Military Reservation (FRMR) in Kansas. Shrike habitat suitability indices were calculated based on the amount of potentia...
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ژورنال
عنوان ژورنال: The Wilson Journal of Ornithology
سال: 2006
ISSN: 1559-4491,1938-5447
DOI: 10.1676/05-055.1