One of my favorite birds, the Common Raven. Note the wedge-shaped tail and large head.

High-flying Tundra Swans. Note their long necks.

A Black Vulture. Note the stubby tail and stocky wings.

A male Red-breasted Merganser. Note its long neck, thin bill, and dark head (actually green). There are two likely possibilities: Common and Red-breasted Mergansers. Common Merganser has a green head and neck, while Red-breasted has a white collar behind its head. Common would also have more white just above the wing. Not a common bird at Tussey Mt hawk watch.

A Red-shouldered Hawk. Even though this picture is of a distant bird, you can see the crescents on its wings. Flapping also gives a hint - Red-shouldereds are more likely to flap than any other buteo.

Also a Red-shouldered Hawk. From below, see the crescents on the outer edge of wings. It is also slimmer than the other buteos.

An adult Red-tailed Hawk. Note the reddish tail and stocky dimensions.

A Northern Goshawk. I believe that this is an adult because it looks light-colored below. Note the long tail, stocky body, and broad wings. When first seen, it was doing a deep flap, similar to a Common Nighthawk, as if it was displaying.

A large, dark bird that flexes its wings down is a vulture. This is a Turkey Vulture. You can use this trait to differentiate a Turkey Vulture from a Golden Eagle at a long distance. If you cannot identify a large, dark bird, watch to see if it flexes.

A high-flying Red-tailed Hawk. Note how stocky it is compared to the Red-shouldered Hawk in #6.