°8q4 J Kennard on Toting Red-shouldered Hawks. 27 ^ 



caught up with her and even went ahead of her later. Pete 

 was about two days behind Topsy when I found him ; and 

 though at one time he started to catch up, he finally dropped 

 farther and farther behind. 



As they grew, their feathers spread from the interscapular 

 region upwards over the hind neck, nape, and back of the head, 

 and at the same time backwards over the rump, towards the 

 upper tail-coverts, which were already well grown. Their 

 breasts, too, became more and more feathered, and these 

 feathers spread upwards over their throats and chins, and the 

 sides of their heads, as well as downwards over their bellies 

 and sides, to meet their under tail-coverts, which had become 

 well grown in the meantime. Almost the last parts to be cov- 

 ered were their thighs, which only became so when the growth 

 on their bellies reached and extended down them. The growth 

 under their wings, which came last, started at their finger tips 

 and worked backwards towards their shoulders, finally meeting 

 the growth on their sides. 



The figures in the subsequent pages were calculated from 

 measurements taken at certain intervals upon each Hawk. 

 I measured their length from bill to tail ; their extent from tip 

 to tip ; the length of the fourth primary, and of the middle tail- 

 feather. From these measurements I could easily compute the 

 growth of each Hawk per day, as well as the average growth 

 of the three, which is also shown. 



Tables Showing Growth in Three Young Red-shouldered 



Hawks. 1 



Name. Date. Length. Extent. 4II1 Primary. Tail-feathers. 



Bute, June 12, 1893, 4 p.m. 12.00 26.00 4.00 2.50 



Topsy, " " " " 12.00 26.00 4.00 2.25 



Pete, " " " " 12.00 22.00 3.00 1.75 



Bute, " 14, " " 12.75 27.00 4.75 3.00 



Topsy, " " " " 12.75 26.50 4.37 2.87 



Pete, " " " " "-75 23.50 4-oo 2.25 



Bute, " 16, " 1 p.m. 13.50 2S.50 5.50 3.50 



Topsy, " « " " 13.75 2S.50 4.75 3.25 



Pete, " " '• " 12.75 25.50 4.25 2.75 



Bute, " 19, " 6 p.m. 1450 30.50 6.00 4.25 



Topsy, " " " " 14-75 3 J -o° 6.00 4.13 



Pete, " " " " 13.75 2 9-o° 5-oo 3.50 



35 



