bird-nesting noun2 •(US) A custody arrangement in which the child of divorced parents remains in one home while the parents take turns to move in and out.An unusual, but not unheard of, setup called bird nesting is when children stay in the house and the parents take turns moving in and out. — 2007 •(UK, Australia) The, formerly common, hobby of looking for birds' nests, often with the intention of collecting the eggs.Let's go bird-nesting. — 1934
