4 Black-capped Chickadees with various forms of deformed beaks
![4 small birds with different deformed beaks](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/BCCH_deformities_4_bird_collage.jpg?itok=c9n5Kl5b)
Detailed Description
Figure 6. Black-capped Chickadees with various forms of beak deformities: a) gap between maxilla and mandible; b) overgrown part of beak becomes brittle breaks off and leaves a blunt tip; c) extremely thickened beaks; and d) laterally curved beaks.
Sources/Usage
Public Domain.