Summary: primary emerges from sheath By day 17 the contour feathers start to push out prepennae and only pale buffy tips of rectrices have emerged but growing at about 2 mm d since day 13 At 20 days while still with heavy coat of second down brown contour feathers are visible on margins of wings tail and faintly around the eyes By 30 days young appears about half down
Image Dimensions: 732 x 426
Image originally found here.