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Estimating the Breeding Population of Great Blue Herons (Ardea herodias) in Maine, USA, Using Dual-frame Sampling

Danielle E. D'Auria, Auteur ; Mark C. Otto, Auteur

Dans Waterbirds (41(4) December, 2018)

The Great Blue Heron (Ardea herodias) is a Species of Special Concern in the State of Maine, USA, due to declines along the Atlantic coast since the mid-1980s. To determine if this decline was statewide, an aerial survey was conducted from 1 May[...]

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