The word 'raptor' is also used to refer to large predatory birds like eagles and hawks. Doing a search for 'restrained raptor' returns this document:

The Aba: a device for restraining raptors and other large birds

*Giggles* There are illustrations too. Very intriguing! I suggest you download and have a read through it. ^..-

Don't forget to comment on my artwork! I value feedback more than anything else, whether it be critique or you just want to push me to draw another bondage pic. XD. Have fun! =)