Fig. 7.

(A) Stage 38 (9.5–10 days) quail embryo, including limb detail. (B) Schematic representation of the average pigmentation pattern seen at stage 38. Black pigmentation is more distinct on the forehead, crown, adjacent to the external auditory meatus, and along the dorsal neck. Pigmentation continues on either side of the spine, over the scapula, ulna, thigh and tail. Several rows of black feathers are visible in the region of the coracoids. Golden-brown pigmentation is now evident in most regions containing black pigmentation and there is a distinct line of golden- brown pigmentation running parallel to the spine. In all regions, mean feather germ lengths have increased. No pigmentation is yet present on the feet. The mean beak length is 1.5 mm and third toe length is 4.7 mm.