Just used google
typed in "Birds of Prey Trophies"
Clicked on the first search result, which was Link: PS3-Sense
for me (it's a dutch site though, so you might not be able to read everything)
Checked some other websites after that, to see what they reported in case that one was a fake. But seems like several sites report the same thing. They made their trophy list public 1 or 2 days ago, couldn't find the original source though.