Derek
If he told anyone about the creature it would probably go to some lab in a government facility or something. people are scared of what they do not know. hell, derek was scared.
Anthrobird considerations
There's also a lot of places where 'weapons', including raptor talons, are frowned upon, such as in government facilities or on aircraft.
Chapter Ten - Dunar
Typical of a government facility, they were mostly landscape paintings, unprovocative, and uncontroversial.
Exile - Chapter 16: An Unusual Week
Although not as heavily guarded as other government facilities, there were still thorough security checks in order to get access to the building. fortunately, whatever fox had done allowed them to get through them all without issue.
Treading Chapter 14 - The Fall
If that isn't bad enough, after the attack was carried out and government facilities locked down a pair of requorans were found; one of them a government employee that'd managed to stay beneath the radar somehow.