Hello Deb!
Yes sure, You are right about wingtips on the outer primaries. But look at the photo №5 (IMG 3585), I can see a contrast between darkish underwing coverts (at least primaries coverts) and palish ground colour of outer primaries. As far as I know this feature is more better for bigger falcon (Saker,Gyr) and not so usual for Peregrine which has more plain pattern of underwing...
Well the others that have ID'd this as a Peregrine on the thread will have their own ways of defending their position so I will leave it to others such as Tom, Rafael and Fern to elaborate if they want to but this is what I think answering you as fully as I can:
I can make out yellow (ish) feet, just about, so it would have to be an adult or young adult of any of these sp. I agree it's hard to make out plumage details but it appears to have a fairly solid hood and perhaps rufous tinges to the nape (better for Pere). Most adult Saker have brownish underparts heavily marked on the coverts and belly/chest which I don't see here - It looks greyish to me indicating fine black bars or fine black spotting. This might not rule out an adult 'grey' Gyr with a dark hood, some indeed having very Pere-like head patterns but the flight feathers I think would not show this distinctly dusky trailing edge to the primaries (which is quite unique to Peregrine cf to other large falcons) and would show a higher contrast between the coverts and flight feathers imo. Also don't forget, flight feathers against the light can show as lighter contrasts to coverts simply because of the way light behaves shining through the flight feathers on the wing of a bird cf to the solid part of the wing, ie the coverts/patagium etc. Structure looks fine for Peregrine, I see a comparatively fairly long slim wing and comparatively less compact shape than might be expected for Gyr but that is a bit subjective on my part.
Finally and absolutely not least, location, location, location
Gyr (wild at least) would be a mega rarity in the Ukraine (afaik!)
I agree, the plumage is not clearly presented but there are shadows/light etc that disfigure the true nature of the plumage imo and while the full crop does give the impression of a stockier bird, in addition to my remarks about plumage above, the location is enough for me to say yes, as I did in my first post, 'A Peregrine is most likely'.
