Double-Survey Estimates of Bald Eagle Populations in Oregon

The literature on abundance of birds of prey is almost devoid of population estimates with statistical rigor. Therefore, we surveyed bald eagle (Haliaeetus leucocephalus) populations on the Crooked and lower Columbia rivers of Oregon and used the double-survey method to estimate populations and sigh...

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Veröffentlicht in:	The Journal of wildlife management 1999-07, Vol.63 (3), p.794-802
Hauptverfasser:	Anthony, Robert G., Garrett, Monte G., Isaacs, Frank B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aircraft Animal populations Animal, plant and microbial ecology Biological and medical sciences Birds Boats Eagles Estimation bias Estimation methods Fundamental and applied biological sciences. Psychology General aspects. Techniques Methods and techniques (sampling, tagging, trapping, modelling...) Population estimates Statistical methods Survey methods Vehicles Wildlife management Wildlife population estimation
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