Peregrine Falcon M or F ?

[Scotty2]

This chap(ess) is setting up shop on site. Can anyone tell me if it is Male or Female?

We have constructed a nesting box to try and get it to stay as the pigeons don't like it!

Pic from CCTV so not ideal.

[Scotty2]

I'll try and get a better pic when he/she is facing the other way (It was a pic of the CCTV screen while at max zoom). I do agree that it seems to be a young bird. When watching it preen and move about, the talons look extremely big for the body size, and it has just started to hang out here over the last few weeks.
Bird box constructed and waiting to be installed.

[Scotty2]

One of the tail feathers:

[Scotty2]

It is not a "Box" as such, but more of a Hutch. You are correct that they don't build a nest but a "scrape" where the female lays eggs in a small depression. We have sand/stone about 50mm deep behind a 10mm plank to stop accidental egg rolling.Got the design from a specialist website... No! not that type ;-)

[Scotty2]

Emanresu said:

It’s a wild bird. Trying to trap it will make you a .

Trap it! We are trying to help a rare species breed. It's a nest box, not a trap you tit!

FFS. Reggie, or Elisabeth is welcome on our site.

[Scotty2]

Good info on this site:

http://www.londonperegrines.com/services/index.php

A Kestrel will need a more traditional box. Just search for Kestrel Nest Box images.