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  • Censuses of Black Brant at Yaquina Estuary, Lincoln County, Oregon

    Creator:
    Bayer, Range D., 1947-
    Abstract:
    Black Brant (Branta bernicla nigricans) had two different seasonal patterns of occurrence at Yaquina Estuary. At embayment areas with eelgrass (Zostera marina), Brant typically arrived between October 22 and November 4, Brant numbers progressively climbed in November, Brant abundance in December-January was relatively constant, and Brant numbers often fluctuated greatly...
    Resource Type:
    Article
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    April 1974; so, similarly to West Bridge (section H-4), they were only occasionally present in spring

  • Waterbird and mammal censuses at Siuslaw Estuary, Lane County, Oregon

    Creator:
    Bayer, Range D., 1947- and Lowe, Roy W., 1953-
    Abstract:
    At the Siuslaw Estuary or some adjacent areas, U. S. Fish and Wildlife Service (USFWS) Biologists John Annear, John Cornely, and Roy Lowe conducted 67 censuses; Maureen Woolington made 90 censuses, and Range Bayer completed 429 censuses. Unfortunately, these censuses do not give a complete picture of the seasonality, abundance,...
    Resource Type:
    Book
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    Area A, Site 8, Area B, and Area H--------- 40 Table 4-2. Variation in frequency or abundance of taxa

  • A three nest, humanly disturbed Great Blue Heron colony along the Willamette River, Linn County

    Creator:
    Bayer, Range D., 1947-
    Abstract:
    There were 21 days with observations during 30 January-21 May 1974. Herons were already displaying on January 30, so nesting activity can occur much earlier than has been supposed. A yearling was often seen at the nests, but most nesting activity was by adults. Although eggs were laid in at...
    Resource Type:
    Article
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    . ************************************************** B. STUDY AREA Location: Township 12S, Range 5W, NE 1/4 of Section 2 Area Studied: <1 ac (<0.4 ha

  • Harlequin Duck records mostly from Lincoln County, Oregon

    Creator:
    Bayer, Range D., 1947-
    Abstract:
    612 Harlequin Duck records are given for Lincoln County, and another 74 records are listed for other coastal counties. In Lincoln County, Harlequins are found mostly in winter, there were often more males than females, the most ever counted was 14, and there is no indication that they nested. In...
    Resource Type:
    Article
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    -H Yaquina Head 71 4 1 2 2 3 4 4 1 3-I Yaquina Estuary: South Jetty 236 3-J 11 11 East of HWY 101

  • Records of bird skins collected along the Oregon coast

    Creator:
    Bayer, Range D., 1947-
    Abstract:
    In spite of imperfections, this monograph is useful in locating bird skins collected along the Oregon Coast that are stored in about 80 museums. This monograph lists over 11,000 records of skins for 279 bird species and 192 records of skeletons for 52 bird species. Each record includes the species,...
    Resource Type:
    Book
    Full Text:
    . Birds--Oregon. 4. Birds--Oregon--Pacific Coast. I. Title. II. Series. QL684.06B388 1989 598.29795--dc2O

  • Semimonthly bird records through 1992 for Lincoln County, Oregon; Part II: Records sorted by species

    Creator:
    Bayer, Range D., 1947-
    Abstract:
    This paper supersedes and significantly revises my compilation of 1992. The focus remains on live birds seen on or from land, but special codes are now given for records of species only reported beached or at sea. Additionally, confirmation codes are now listed for records of some rare species and...
    Resource Type:
    Article
    Full Text:
    1995.J. Oregon Ornithology No. 4. Chap. 1. Introduction