Jessiedog: you havent told us about the eyebrows
Oh yes I have!
Jessiedog said:
.....together with the telltale "white eyebrows" .....
Hawks are "Shortwings" as opposed to falcons "Longwings".
In hawks, the 4th or 5th primary feather - counted from closest to the body - is the longest (as too in Buzzards and Eagles,) giving them strong, broad, round-ended wings (similar to crows,) that are good for short, fast, flapping, bursts of speed. They hunt low to the ground over short distances. They use stealth (sitting in a tree/hedge until something comes nearish, or flying along hedges hoping to "flush" something out,) and then a huge burst of speed over a short distance to overhaul the quarry.
It's possible that a male Sparrowhawk could take a mature adult Woodpigeon under
very favourable circumstances, but highly unlikely; they weigh between 6oz and 9oz at best while a mature woody can run over 2lb. Even a female Spar at 7oz - 12oz would generally avoid that kind of trouble.
Some species of Dove and some smaller-than-Woodie Pigeons are fair game for the larger and bolder females tho'.
Typical prey in the wild, are any typical "garden" birds (including hedgerow, field and wood/spinney,) from Wrens and Tits through Robins and the various Sparrows, to Blackbirds and Thrushes. Starlings are good, but can fight back vigorously using their long pointy beak as a dagger and will tend to be avoid as the Spar learns this.
Small birds that fly high and fast such as Larks, Woodcocks, Swallows and Swifts, etc. are not on the Sparrowhawk's menu.
The smaller "Longwings", however, Merlin and Hobby specifically, can take these prey, though perhaps the Swallow/Swift is really only for the Hobby and when there's easier prey around, why bother with the most difficult?
In Longwings, the 1st or 2nd Primary is the longest and you get that classic Peregrine "pointy-wing" look as opposed to the Hawk's blunt, rounded style. Longwings typically hunt by gaining altitude through circling in upward spirals into the sky (in order to be high above any quarry,) and then circling or drifting until they see a likely target, wherupon they close their wings (after a couple of quick clips downward,) and go into a "stoop", often diving hundreds of feet like a bullet before battering into their prey and knocking it senseless. This speciality of nature allows larger quarry to be taken in relation to the Falcon's size.
Kestrels are true falcons and will both ring-up and stoop, but they are also masters at the low (50 - 200 feet) hover and then stoop.
Woof