Figure 5. Left to right. Knife-like shape of folded wing of male Ruby-throated (feathers relatively all new and darkly-colored); compared to broader-tipped shape of female Ruby-throated (feathers all more worn and pale); adult female Black-chinned with wing molt (primaries 1-6 new, seven missing, and 8-10 old); and immature female Black-chinned with the broadest primaries, and with a combination of new and old feathers (1-4 new; 5-10 old).