As soon as the goslings hatch, they are immediately capable of walking, swimming, and finding their own food (a diet similar to the adult geese). Parents are often seen leading their goslings in a line, usually with one adult at the front, and the other at the back. While protecting their goslings, parents often violently chase away nearby creatures, from small blackbirds to lone humans who approach: first giving a warning hiss, and then attacking with bites and slaps of the wings. Canada geese are especially protective animals, and will sometimes attack any animal nearing their territory or offspring, including humans. Although parents are hostile to unfamiliar geese, they may form groups of a number of goslings and a few adults, called crèches.