This unbelievably tiny (1 1/8" long!) skull was originally found in a science teacher's supply catalog. The original belonged to a ruby-throated hummingbird, (Archilochus colubris) which are mostly found in eastern and central US, but breeds throughout the central US and Central America. Often found in gardens, it winters in tropical rainforest. Reaching a length of only 3 inches, they are, along with other hummingbirds, the smallest birds in the world. We cast this specimen in sterling silver and put each piece on a delicate sterling silver chain. They're spectacularly detailed and true-to-life, and suitable for wear by both men and women. Total chain length is 22". Spring ring clasp at back.