Boing Boing pointed me toward this crazy search engine for animal heads. From the brief writeup: “x6udpngx’s x6ud is a single-purpose search engine that offers high-quality animal photographs for use by artists seeking reference material.” This is a wow. First you pick a species (not all species are available.) Then you pick a skull type underneath and click and drag the skull to orient it in the position you want to find. For example, I pick hawk species, and the chicken skull. I click and drag the skull so I’m looking at it in profile. I click search and the search results I will get will be for hawk heads in profile. It doesn’t work as well for weird positions like the top or bottom of the skull, but still. Go play with it.