270 THE WILSON BULLETIN—NOs. 76-77. 
of the feather tracts was perhaps altogether normal. Chester 
Co., Pa., June 12, "10, one young about 10 days old, weight 4 
ounces, still in its nestling down, pupil appears blue and iris 
deep brown. June 17, about 15 days old, primaries and sec- 
ondaries developing in quill; June 18th, greater coverts appear- 
ing in quill; 19th, alula, scapulars, inter-scapulars in quill; 21st, 
coverts coming out quite regularly, also nape and rectrices; 
22nd, 20 days old, primaries, secondaries and tertials bursting 
sheath, nape down to middle of back, upper tail coverts; 23rd, 
sides of breast, irides wood brown; 24th, interscapulars show 
through white down quite prominently, rump pin feathers 
(compared with young bird in nest July 4, ‘00, known to be 
22 days old; down covered head, neck and thighs, primaries 
and secondaries broken sheath and partly developed, breast 
feathers dashed with tawny hut not to middle, irides hair 
brown) ; 25th, colors distinguishable; 26th, pin feathers down 
back to rump, under tail coverts; 27th, pin feathers spreading 
on abdomen and breast. July 1st I was compelled to kill this 
bird. Onithe 27th [ was away all day and left word that it 
should be fed often, hut my niece neglected it, and the poor 
little creature, frantic with hunger, tumbled out of its box in 
its efiorts to meet me as | entered in the evening, breaking its 
right lee above the heel and since almost refused to eat. De- 
scription: feet and tarsi straw yellow, cere citron yellow, edge 
of mouth, skin of lores and lower eyelids, pale greenish-blue; 
irides mouse gray, weight 9 oz., about 29 days old. 
Two captives taken on July 2, 07, 22 days old, were “Tuck” 
the larger, older and male bird; and “Nip” the female; natal 
down, except as herein noted, humeral tract or scapulars evi- 
dently first showing two or three days back; alar tract, second- 
aries. terials, greater upper wing coverts, followed by the pri- 
maries, primary coverts and alula, rectices less than one-half 
inch in sheath; ventral tract, patch appearing on side of breast 
but not below; spinal tract, first traces between shoulders; fe- 
moral tract, first traces; irides slightly lighter. July 3rd, spi- 
nal tract, first traces appearing prominent ; humeral, spreading, 
showing a V-shaped tract when wings are closed ; altar-primar- 
