The Eastern Kingbird is probably one of the easiest flycatchers to see at Wind Cave National Park. During the summer months, the kingbird’s dzeet call can be heard in brushy areas near the prairie. Eastern Kingbirds can be seen and heard at the visitor center near forest edges. Eastern Kingbirds are known as being particularly aggressive to nest predators—they can attack and chase away many other birds like jays, hawks, owls, crows and even vultures and eagles. Eastern Kingbirds can be observed at Wind Cave National Park starting in early May.