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| Description: A. Wood ducks build nests only inside hollows of specific dimensions. With the clearing of old-growth forests, the access to natural cavities of the correct size and position is now a limiting factor on wood duck population size. Picture Stats: Views: 87 Filesize: 781.08kB Height: 1031 Width: 1338 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=47179 |