Feathers lacking a shaft or with only a rudimentary one; have no continuous vane and consist of a tuft of fine free barbs.
Down feathers, under-feathers
Definition
Related terms
Damaged eggs, broken eggs
Eggs with severely damaged shells and ruptured shell membranes.
Dark yolk, yellow yolk
More intensely colored yolk material in concentric layers; intensity depends on ...
Day-old chick
A chick from hatch until 24 hours after removal from the hatcher.
Day-old chick box
Cardboard (or plastic crate) adapted for transporting day-old chicks of all poul...
Dead embryos
Embryos in which no signs of life are present; causes vary, most often improper ...
Debeaking, cauterization
Removal of part of the beak in young birds to prevent cannibalism; permitted up ...
