#Goister# or #gauster# is a common dialect verb; the latter
form seems the more common and is recognized in the Oxford Dictionary,
where it is defined 'to behave in a noisy boisterous fashion ... in some
localities to laugh noisily'. If jackdaws are to appropriate a word to
describe their behaviour, no word could be better than _goistering_, and
we prefer _goister_ to _gauster_. Its likeness to _boisterous_ will
assist it, and we guess that it will be accepted. In the little glossary
at the end of the book _goistering_ is explained as _guffawing_. That
word is not so descriptive of the jackdaw, since it suggests 'coarse
bursts of laughter', and the coarseness is absent from the fussy
vulgarity and mere needless jabber of the daw.