Central Valley winter raptor survey (2007-2010): Loggerhead Shrike habitat associations.
Edward R. Pandolfino, Zachary Smith
原始摘要（英文原文）· Original abstract
We analyzed the habitat associations of wintering Loggerhead Shrikes (Lanius ludovicianus) in the Central Valley and found them positively associated with grassland, irrigated pasture, and forage crops such as hay. They avoided oak savanna, rice, orchards, and rural residential areas.