feeding habits, flight styles, and preferred habitats. A swallow swooping over a field, a gull gliding above a beach, and a sparrow hopping through a garden are not necessarily giving us the same kind of clue. Even members of the same species may behave differently depending on whether they are feeding, migrating, avoiding a predator, or heading to a roost.
Wind can also influence flight. In strong winds, birds may fly closer to the ground, where buildings, trees, and landforms offer some protection from the full force of the air.
