Nighthawk + Raven
Did these guys a while back, and some free icons are available at http://www.unillu.com/blog/blog/2015/11/02/bird-icons-set-1/
I also threw them on Redbubble for sh*ts and giggles.
http://www.redbubble.com/people/mpriorpfeifer/shop
Hope you like!