Merlin or peregrine falcon? -Troy, NY, USA (2 Viewers)

[viceroy11]

Today I saw a falcon harassing a red-tailed hawk sitting on top of a church, and I am unsure if it was a peregrine or merlin. I only got a brief look but the falcon had a clear mustache, a solid bluish/grey back, a white/brownish underside, and appeared to be essentially the exact same size as a crow (crows were also harassing the hawk). From my brief first impression it seemed to have horizontal bars on its underside, although this was only a quick glimpse. I know it will be impossible to get a definite answer on the ID but what is more likely for the area? Troy is very urban but I was in one of the few small parks - although the falcon came in from the city and flew right back into the city after. Here is a link to a video I took, although you can't make out any detail from it:

 

[Butty]

Your video says it's private, and won't play. It seems that the size comparison you made was a meaningful one, and that then decides the ID of your falcon (assuming it was a falcon) - peregrine.

 

[viceroy11]

Your video says it's private, and won't play. It seems that the size comparison you made was a meaningful one, and that then decides the ID of your falcon (assuming it was a falcon) - peregrine.

Sorry, video should be public now. Thanks for the help, I was hesitant to ID it on size, but I don't have much else to go off

 

[Butty]

Video plays now. Assuming the bird on the roof is a red-tailed hawk, and the bird mobbing it is your problem bird, then its size seems OK for peregrine and wrong for merlin - though I can't actually identify either bird in the video.

 

[KC Foggin]

My thought was a Peregrine

 

[viceroy11]

Video plays now. Assuming the bird on the roof is a red-tailed hawk, and the bird mobbing it is your problem bird, then its size seems OK for peregrine and wrong for merlin - though I can't actually identify either bird in the video.

Yes, I am 100% certain that the bird on the roof is a red-tailed