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Four passerine species with beak deformities

Detailed Description

Figure 9. Passerine species with beak deformities: a) Chestnut-sided Warbler in Newton Centre, Massachusetts, photo courtesy of John Neufeld; b) Yellow-rumped or Myrtle Warbler in Cape May, New Jersey, photo courtesy of John McNamara; c) Slate-colored Junco on Middleton Island, Alaska, photo courtesy of Rachel Richardson; and d) Boreal Chickadee, photo courtesy of Rachel Richardson.


Public Domain.