I’ve wondered if birds have any perception of size. A Snowy Egret mingled with these American White Pelicans, perhaps thinking they would stir up a snack.
Average weight of a Snowy Egret: 13.1 oz (370 g)
Average weight of an AWP: 158.7-317.5 oz (4500-9000 g)
Source: The Cornell Lab: All About Birds