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Message: <blockquote data-quote="Jane Turner" data-source="post: 1660547" data-attributes="member: 4350">HI Alex, is it common for Peregrines your way to have strongly marked breast sides/auxilliaries and apparently pale centre of the breast, I'm not au fait with racial variation, but its seems a little out of kilter - also though there is a strong moustache, it does seem quite thin.  Its probably not wise to read too much into a single photo, but if it looked like it does in this pic consistently, I'd not be sure it was a Peregrine.  If it were an escape, perhaps it would gravitate towards food sources.Edited to add that I've seen the comment on calidus/tundrae type Peregrines, that may well be the answer, but are they not big buggers.  (that is a technical term)</blockquote>