An Aerial Photographic Census of Chesapeake Bay and North Carolina Canvasbacks

We used conventional 35-mm photography to conduct an aerial photographic census of canvasbacks (Aythya valisineria) throughout Chesapeake Bay (tidal Maryland and Virginia) and coastal North Carolina, 26-30 January 1981. Flock size and sex ratio characteristics were determined from examination of col...

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Veröffentlicht in:	The Journal of wildlife management 1985-01, Vol.49 (2), p.449-454
Hauptverfasser:	Haramis, G. M., Goldsberry, J. R., McAuley, D. G., Derleth, E. L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerial photography Animal and plant ecology Animal, plant and microbial ecology Animals Aythya valisineria Biological and medical sciences Birds Brackish Censuses Demecology Ducks Female animals Flocks Fundamental and applied biological sciences. Psychology Male animals Marine Sex ratio Waterfowl Wildlife management
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