what did this to my birds foot

[animals1981]

i dont get what is going on??
http://www.flickr.com/photos/113163216@N07/12181851896/

 

[tillyita]

i dont get what is going on??
http://www.flickr.com/photos/113163216@N07/12181851896/

It looks like it has been caught somewhere. This sometimes happens if you have thin wire on your cage/avery. The toe gets caught between the wire and a perch or the frame and cuts off the circulation.