Those must be very popular with Jimmy Buffett fans!
On a more serious note, I have several pair of parrot-head pliers, including J.P. Danielson, Barcalo, Wilde, and Eagle Claw (probably the oldest), and maybe one or two I don't remember. But I have never heard of the Parrot Head Tool Company before. I'm surmising with a name like that they only made parrot-head pliers? What does that say underneath? Oklahoma City?
EDIT: Quickie Google Books search turned up notices of their incorporation in July 1925 trade mags but nothing else. One linked
here.