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 Date: 2006-10-04 16:44:18Bird atlas Breeding bird survey Transect Bird migration Avian ecology field methods Ornithology Zoology Biology |
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Date: 2006-10-04 16:44:18Bird atlas Breeding bird survey Transect Bird migration Avian ecology field methods Ornithology Zoology Biology |
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LANDBIRD INVENTORY FOR NORTH CASCADES NATIONAL PARK SERVICE COMPLEX[removed]FINAL REPORT RODNEY B. SIEGEL AND ROBERT L. WILKERSON THE INSTITUTE FOR BIRD POPULATIONS