Flying
When Dawnfeather Eagle enters the battlefield, creatures you control get +1/+1 and gain vigilance until end of turn.
Dawnfeather Eagle’s triggered ability affects itself.
The set of creatures affected by Dawnfeather Eagle’s triggered ability is determined as the ability resolves. Creatures you begin to control later in the turn and permanents you control that become creatures later in the turn won’t get +1/+1 or gain vigilance.