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Please read BHL's Acknowledgment of Harmful Content
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  1. By: National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey
    Publication info: 1971
    Holding Institution: Smithsonian Institution Archives
    Subjects: Bird banding  Birds--Egypt  Birds--Migration  Birds--Parasites  Common quail  Egypt  Field notes  National Museum of Natural History (U.S.) Palearct  Ornithologists  Otus  Scops owl  
    BHL Collections: Smithsonian Field Books collection
  2. By: Brelsford, Monica. - Gallatin National Forest (Agency : U.S.) - Montana Natural Heritage Program.
    Publication info: Helena, MT, Montana Natural Heritage Program, 1992]
    Holding Institution: Montana State Library
    Subjects: Aegolius funereus  Ecology  Flammulated owl  Gallatin National Forest  Habitat  Montana  Otus  Owls