kackle noun 1verb 1forms 3 noun1 •A low raspy noise accompanied by head jerks, used to signal appeasement in some species.With mated birds, however, the preening bird was not aggressive and approached the partner with appeasement displays such as Head Jerks, Kackles and ambivalent movements. — 1977 verb1 •To make a kackle while jerking the head, signalling appeasement.A bird 'kackling' while alighting may be ignored or greeted in return with weak 'kackles' and headjerks. — 2012 formskackled · kackling · kackles
