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Showing 1 - 20 results of 26 for search 'American decline', query time: 0.47s Refine Results
  1. 1
    by Sheehan, Vera Longtoe
    Published 2020
    “...In the borderland between the United States and Canada stand communities of Native American people...”
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  2. 2
    “...Nests of American Bitterns (Botaurus lentiginosus), marsh hawks (Circus cyaneus), and short-eared...”
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  3. 3
    “...Declining buroot (Lola lola) abundance across some portions of North America has prompted a search...”
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  4. 4
    “... at the non-breeding grounds, including the American white pelican (Pelecanus erythrorhynchos). We used Global...”
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  5. 5
    “... to declining wild stocks and a need to restore such populations. Beyond conservation efforts, there is also...”
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  6. 6
    by Anteau, Michael J., Afton, Alan
    Published 2008
    “...The spring condition hypothesis (SCH) states that the current decline of the North American scaup...”
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  7. 7
    by Silcock, W. Ross
    Published 2019
    “... usual in winter. The long list includes unexpected midwinter records of Tundra Swan, American Wigeon...”
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  8. 8
    by Carson, Rachel
    Published 1947
    “... to the national effort to save the waterfowl of North America. Many million Americans have a direct stake...”
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  9. 9
    by Currier, Paul J.
    Published 1989
    “... [Eleocharis obtuse(Willd.) I.A. Schult.], + 36%; and American bulrush (Scirpus americanus Pers.), + 14...”
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  10. 10
    by Jones, Stephen R.
    Published 1989
    “..., corresponding with a > 60% decline in numbers of wintering bald eagles, ferruginous hawks and red-tailed hawks...”
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  11. 11
    Published 2006
    “... since 157 in 1966. Wild Turkeys saw their first decline since 1998, although they are still doing well...”
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  12. 12
    by Johnsgard, Paul A.
    Published 2008
    “... that period a small percentage of Americans have become very rich through advances in technology, expanding...”
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  13. 13
    by Silcock, W. Ross
    Published 2003
    “... of declines in numbers of Black-billed Magpie, American Crow, and Black-capped Chickadee, westerly Carolina...”
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  14. 14
    by Igl, Lawrence, Johnson, Douglas
    Published 1997
    “... and frequency varied considerably among species. Data from this survey and the North American Breeding Bird...”
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  15. 15
    “... abundance to justify continued monitoring. Declines over time in residues of DDT and mercury in tissues...”
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  16. 16
    “... the North American continent. The distribution and abundance of the species has declined in the past century...”
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  17. 17
    “...Despite widespread population declines of North American grassland birds, effects of anthropogenic...”
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  18. 18
    by ABORN, DAVID A.
    Published 2010
    “... on individual days. Preliminary results indicate that declines in Canada goose (Branta canadensis) numbers do...”
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  19. 19
    “... deer, a species that lives in every North American habitat except for the tropics, arctic and extreme...”
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  20. 20
    “.... 2009). In 1890 and 1891, a member of the American Acclimatization Society, Eugene Scheiffelin, released...”
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