yard bird

Noun yard bird has 2 senses

• yard bird(n = noun.person) yardbird - a military recruit who is assigned menial tasks;
is a kind of military recruit, recruit

• yard bird(n = noun.person) con, convict, inmate, yardbird - a person serving a sentence in a jail or prison;
has particulars: lifer, trusty
is a kind of captive, prisoner