WitrynaThe Loggerhead Shrike (Lanius ludovicianus), a pas- sefine bird of medium size (œ = 55.75 + SD of 0.27 g, n = 129, unpubl. data) preys on large insects, ro- dents and small birds. Numbers and the breeding range of Loggerhead Shrike have been steadily de- clining in NorthAmerica since at least 1966 (Morrison 1981, Erskine et al. 1992). WitrynaLoggerhead Shrike has suffered significant, more than 80%, population declines over the past 35 years (COSEWIC 2004). These declines have been linked to loss of native prairie and pastureland habitats and pesticide residues (COSEWIC 2004). The Loggerhead Shrike eats insects, shrews and small rodents (COSEWIC 2004).
Loggerhead Shrike - American Bird Conservancy
WitrynaRegistre public des espèces en péril - Species at Risk Public Registry WitrynaCOSEWIC. 2000. COSEWIC assessment and update status report on the Loggerhead Shrike migrans subspecies, Lanius ludovicianus migrans in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa, Ontario. viii + 13 pp. ... Loggerhead Shrike (Lanius ludovicianus) predates California Red-sided Gartersnake … soft computing影响因子
Conservation genetics of the loggerhead shrike - Springer
WitrynaThe Loggerhead Shrike, migrans subspecies (Lanius ludovicianus migrans) also known as the Eastern Loggerhead Shrike was most recently assessed as Endangered by … WitrynaLoggerhead Shrikes are considered to be ‘threatened’ in western Canada by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC 1999). The Loggerhead Shrike has been the focus of several recent investigations in Alberta. This report summarizes recent and historical information on the Loggerhead Shrike as a … WitrynaThe Loggerhead Shrike Lanius ludovicianus is a robin-sized bird that hunts like a small hawk, preying on insects and small animals, including small birds. ... Prairie Loggerhead Shrike has been assessed as threatened by COSEWIC and is undergoing consultations to determine if it should be listed under SARA. (A species is considered endangered ... softcom systems inc