Gerrit Vyn Photography –

Gerrit Vyn is a conservation and wildlife photographer and cinematographer dedicated to telling the stories of endangered animals and habitats. He is a producer for the Cornell Lab of Ornithology and a fellow of the International League of Conservation Photographers

Sandhill Crane (Grus canadensis) chick in the process of hatching. The egg tooth, a small, sharp, cranial protuberance used  to break or tear through the egg's surface during hatching is visible. ..Chicks have a pipping muscle on the back of their necks. It gives them the strength to force the egg tooth through the inner membrane of the eggshell..When a chick becomes too large to absorb oxygen through the pores of its eggshell, it uses its egg tooth to peck a hole in the air sac located at the flat end of the egg. This sac provides a few hours worth of air, during which the chick breaks through the eggshell to the outside. The egg tooth falls off several days after hatching.
1 of 1

1. Sandhill Crane-Vyn-110709-11414.tif


Sandhill Crane (Grus canadensis) chick in the process of hatching. The egg tooth, a small, sharp, cranial protuberance used to break or tear through the egg's surface during hatching is visible. ..Chicks have a pipping muscle on the back of their necks. It gives them the strength to force the egg tooth through the inner membrane of the eggshell..When a chick becomes too large to absorb oxygen through the pores of its eggshell, it uses its egg tooth to peck a hole in the air sac located at...
more »

4256x2832



Keywords:
Chukotka
Grus canadensis
Lesser Sandhill Crane
Meinypilgyno
Menypilgyno
Russia
Sandhill Crane
bird
egg
egg tooth
eggs
hatching
nest
pipping
reproduction
tundra