There is no bird called "wap a cap" on the complete list of North American birds.
The Eurasian Blackcap (Sylvia atricapilla) usually known simply as the Blackcap, is a common and widespread typical warbler.
The Black-capped Chickadee (Poecile atricapillus) is a small, North American songbird.
Lots of bird species fit that description, but there is no species with that name.
The species of bird that other species are dependent on is called a keystone species. Keystone species have a disproportionately large impact on their ecosystem relative to their abundance. This particular bird species plays a crucial role in maintaining the balance and health of the ecosystem.
Keystone species
The bird you are describing is likely the Northern Mockingbird. It has a gray body, a black cap, and a diet that includes fruits like oranges. They are common in central Illinois and known for their ability to mimic the sounds of other bird species.
Keystone
The bird with the best eyesight among all bird species is the eagle.
In an ecosystem when a large number of species are dependent on one particular species of bird this makes the bird a keystone species. This bird has a disproportionate effect on the surround environment because so many others are dependent on it.
The species of an eagle is the bird.
Yes, it is an endangered bird. There are five frigate bird species. Only one, the Christmas frigate bird is endangered.
There are 2,900 bird species in South East Asia.
pelican
A Cooper's hawk is a medium-sized bird of prey with a slate-gray back, rusty-colored barring on the chest, and a long tail with dark bands. It can be distinguished from other similar bird species by its size, shape, and distinctive plumage markings, such as the dark cap on its head and the rounded tail with thick bands.