Good, and in a different way from what I'd expected. Strong environmental message and a subsidiary one about the dangers of unthinking acquiescence to authority (including of the religious variety), along with the usual line about being oneself and the power of one individual to make a difference; interspersed with the straight animation are some very striking sequences for a film of this kind - spectacular vistas (almost worthy of Lord of the Rings) and extremely dramatic scenes done with no hint of irony (the males protecting their eggs against the winter, the expedition struggling into the storm). Oddly paced, but maybe that comes of being a bit unformulaic.
(w/ family)