"Is it an eagle?"
Correct! I came here to say the same thing, being a bird nerd :D Nesher is used for vultures, in particular the griffon vulture which can be seen in the Golan heights.
(the additional info is for everyone else, I'm assuming Jay knew that :D)
זהו I don't know, reverso app says is ; "This is" , I'm assuming it's ze and hu (male singular) together, but it wasn't introduced.