BurRNs—ONn BroAp-wINGED HAWK. 271 
ies evidently later than secondaries, middle wing coverts as well 
as lesser coverts not yet in evidence except a few scattered 
feathers, primaries 3.40 on Tuck, 1.70 on Nip; caudal, rectices 
1.87 Tuck, 1.40 Nip. upper tail coverts just appearing; fe- 
moral, first appearance beyond down; vental, slightly extend- 
ing; capital, dark feathers appearing on crown on Tuck, July 
4, humeral tract spreading out over shoulders; ventral spread- 
ing a little on breast and extending slightly towards abdomen, 
crural—scattering, femoral extending downward. 5th, 25 days 
old, spinal tract spreading out over shoulders, ventral spread- 
ing a little on the breast and toward the abdomen, crural, scat- 
tered feathers appearing on the legs and flank extending down- 
ward to legs. 6th, spinal tract extending toward neck, a thin 
line from back of shoulders to almost small of back and ap- 
pearing again at rump; humeral well grown, femoral extend- 
ing rapidly to tibe; capital extending on hind head of Tuck, 
malar in dusky dots, dark feathers just appearing under down 
of crown in Nip; alar filling out rapidly, lining of wings devel- 
oping, ventral filling out and extending; caudal, greater upper 
tail coverts well along and lesser spreading, under tail coverts 
growing rapidly. 7th. spinal tract broadening between shoul- 
ders and at rump and scattered almost to hind neck, erectile 
upon excitement, rump almost complete on Tuck, scattered 
and less complete on Nip; alar, upper wing coverts almost all 
showing, only considerable gaps about median, under wing 
coverts starting, lining well along, feathers of thumb one inch 
out of sheath, as they have been for some time; capital. feath- 
ers extending downward to and on hind head under down, 
crown feathers appearing above down on Tuck; lores appear- 
ing in dark dots, ventral feathers practically complete below 
breast, first band of tail of Nip and second of Tuck. Head, 
neck, middle of breast, edge of wing, median wing covert re- 
gion, back of shoulder to rump and under wings, downy. July 
8, Tuck has the richer underparts and more rusty edging of 
upper plumage so far, and a scattering of dark feathers all 
over center of crown and hind head, lores extending to eyes 
and malar to ear coverts: Nip’s rump not at all complete, con- 
