Bulletin, Issue 197U.S. Government Printing Office, 1950 - Science |
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adult Alaska American American pipit appear April August beetles berries bill blue-headed vireo Bohemian waxwing branch brood brown BULLETIN 197 PLATE bushes cedar waxwing central color County cowbird early eastern eggs showing feathers feeding feet female flight flock four extremes measure grass gray gray vireo ground habits heard inches incubation insects Island July June Lake loggerhead loggerhead shrike male March meadow pipit migration millimeters molt Mountains MUSEUM BULLETIN 197 NATIONAL MUSEUM BULLETIN nest nestlings northern shrike notes numbers observed October pair percent perch phainopepla Philadelphia vireo pine pipit records red-eyed vireo region River roost says season seems seen September singing sometimes song southern southwestern sparrow species specimen spiders spring starlings tail Texas thickets trees twigs usually Valley wagtail warbling vireo watched West western white wagtail white-eyed vireo willow wings winter yellow yellow-green vireo yellow-throated vireo young birds