1. kackle - Noun
2. kackle - Verb
kackle (third-person singular simple present kackles, present participle kackling, simple past and past participle kackled)
Alternative form of keckle
(ornithology) A low raspy noise accompanied by head jerks, used to signal appeasement in some species.
Alternative form of cackle
(ornithology) To make a kackle while jerking the head, signalling appeasement.
Source: en.wiktionary.org