Common Buzzard
Buteo buteo
The common buzzard is a medium-sized raptor that is highly variable in plumage. Most buzzards are distinctly round headed with a somewhat slender bill, relatively long wings that either reach or fall slightly short of the tail tip when perched, a fairly short tail, and somewhat short and mainly bare tarsi. They can appear fairly compact in overall appearance but may also appear large relative to other more common raptorial birds such as kestrels and sparrowhawks.
ID text from Wikipedia, CC BY-SA 4.0

Red-tailed Hawk
Buteo jamaicensis
The red-tailed hawk is dimorphic in size, as females are up to 25% larger than males. As is typical in large raptors, frequently reported mean body mass for red-tailed hawks is somewhat higher than expansive research reveals. Part of this weight is highly seasonally variable and due to clinal variation; male red-tailed hawks may weigh from 690 to 1,300 g (1.52 to 2.87 lb) and females from 900 to 2,000 g (2.0 to 4.4 lb). Voice: The cry of the red-tailed hawk is a two- to three-second, hoarse, rasping scream, described as kree-eee-ar, that begins at a high pitch and slurs downward. This cry is often described as sounding similar to a steam whistle.
ID text from Wikipedia, CC BY-SA 4.0

Learn this pair in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Common Buzzard and Red-tailed Hawk.