gapeline
gapeline · gapelines
The outer edge of a bird's gape, especially when enlarged in a chick or immature birdThe outer edge of a bird's gape, especially when enlarged in a chick or immature bird.
The outer edge of a bird's gape, especially when enlarged in a chick or immature birdThe outer edge of a bird's gape, especially when enlarged in a chick or immature bird.