rumpless

In three rumpless fowls the caudal vertebræ were few in number, and anchylosed together into a misformed mass.

The Variation of Animals and Plants Under Domestication, Vol. I. Charles Darwin 1845

The rumpless fowl has no tail, and in a bird which I kept alive the oil-gland had aborted; but this bird, though the os coccygis was extremely imperfect, had a vestige of a tail with two rather long feathers in the position of the outer caudals.

The Variation of Animals and Plants Under Domestication, Vol. I. Charles Darwin 1845

The skull of a crested, rumpless, white Turkish fowl is very slightly protuberant, and but little perforated; the ascending branches of the premaxillary {265} are well developed.

The Variation of Animals and Plants Under Domestication, Vol. I. Charles Darwin 1845

It was the lanky, rumpless guy she'd seen before when she was there.

East Bay Express Sue Bowden 2010

Such sports are known in some cases to have been parents of some of our domestic races; and such probably have been the parents of many other races, especially of those which in some senses may be called hereditary monsters; for instance where there is an additional limb, or where all the limbs are stunted (as in the Ancon sheep), or where a part is wanting, as in rumpless fowls and tailless dogs or cats {190}.

The Foundations of the Origin of Species Two Essays written in 1842 and 1844 Charles Darwin 1845

This bird came from a family where, as I was told, the breed had kept true for twenty years; but rumpless fowls often produce chickens with tails. [

The Variation of Animals and Plants Under Domestication, Vol. I. Charles Darwin 1845