It is short for 'cock and bull story', an exaggerated, fanciful story.
A cock is a rooster, and a bull is a male cow. A cock and bull story is one that is totally false. The meaning is similar to "bulls**t." It's not precisely vulgar, but it's not a totally polite expression either. You'd say "That's a cock and bull story" when someone was trying to convince you and you thought they were lying.
Some gender nouns for birds are:cob, pen (swan)cock, chantelle (partridge)cock, hen (blue jay)cock, hen (crow)cock, hen (dove)cock, hen (finch)cock, hen (guinea fowl)cock, hen (gull)cock, hen (heron)cock, hen (hummingbird)cock, hen (lark)cock, hen (lyrebird)cock, hen (magpie)cock, hen (nightingale)cock, hen (ostrich)cock, hen (parrot)cock, hen (pheasant)cock, hen (pigeon)cock, hen (quail)drake, hen (duck)gander, goosepeacock, peahenrooster, hen (chicken)tercel, falcontiercel, hen (hawk)tom, hen (turkey)Many types of birds do not have specific gender nouns, for example, penguins or woodpeckers are simply called male and female.
cock
NICE COCK
Mitchel musos cock
Cock fighting originated from Spain.
Hieronymus Cock was born in 1510.
Hieronymus Cock died in 1570.
Matthys Cock died in 1548.
Matthys Cock was born in 1505.
Gerald Cock died in 1973.
Gerald Cock was born in 1887.