January 5th is National Bird Day, a holiday that raises awareness for the many species who face major threats, whether from illegal pet trades, disease or habitat loss. Birds come in all spaces, sizes and colors—with variance from the tiniest humming birds to the grand eagles to the unusual flamingos. We've curated some of our favorite tattoos depicting species of birds in the gallery below, check out the ink and let us know your thoughts on the work in the comments section.