A drawing of a bird's spread wing from below, from Wikimedia Commons (L. Shyamal): ten feather tracts in Latin – the primaries and the secondaries, the marginal, lesser, median and greater coverts, the lesser and greater primary coverts, the axillaries and the carpal joint. The Latin chips show a…
A real anatomical diagram. Hover any part to see its name, click to answer the quiz question.