Twin pigeon embryos.
Twin pigeon embryos were found on incubation day 18 in a pipped egg. The egg was pipped at the small end. The embryos were dead. Removal of a portion of the shell allowed removal of one embryo and revealed the second one. Both appeared normal in development and size.
D000818:Animals; D010856:Columbidae / Q000196:embryology*; D005260:Female; D011247:Pregnancy; D014427:Twins