BIEDS OF ETHIOPIA AND KENYA COLONY 93 



than in the left and just to the extent of a single remex in each case. 

 The fact that the Anole specimen also has several (5) old second- 

 aries, whereas the other individual has molted and replaced all the 

 secondaries, indicates more or less irregularity in the time and order 

 of molt of these feathers. The tail molt is also somewhat irregular, 

 but not enough data are available on this point. In some individuals 

 it seems to be centrifugal ; in others centripetal. 



The plumages of this hawk have been studied rather carefully by 

 Erlanger " and the following notes are in a sense supplementary to 

 his. 



Young birds show an enormous amount of variation in color. The 

 Juvenal plumage is represented in the material examined by a speci- 

 men of pectoralis from Buta, Lower Uelle River, Belgian Congo. It 

 is uniformly dull, dark chocolate brown above and below, the 

 feathers of the upper parts terminally edged with paler brown; 

 the primaries are fuscous, basally washed with whitish on the inner 

 webs and the wliitish areas obscurely marked and broadly barred 

 with fuscous; the outermost primary unbarred in its darker por- 

 tion (distal two-thirds), the next one indistinctly banded with four 

 bars, the bars becoming more distinct on the next and more proxi- 

 mal remiges; the secondaries are dull chocolate brown, the outer 

 ones faintly banded with darker; the rectrices are like the back 

 but are banded with four narrow fuscous bands which are darkest 

 on the middle tail feathers and become lighter on the outer ones; 

 the under wing coverts are dull chocolate brown. 



The variations in seven other young birds are so great that it is 

 quite hopeless to make any logical arrangement which accounts for 

 all the plumages. The tail feathers seem to be the most reliable 

 criterion and they indicate that the adult plumage is not assumed 

 until at least the third, and possibly the fourth year. In the juvenal 

 plumage the rectrices are as described above, dull chocolate brown 

 narrowly banded with fuscous. In the youngest bird examined 

 these bands are four in number and the first and last are neither 

 basal nor apical. In an immature male from Avalaibi, Belgian 

 Congo (J. P. Chapin coll.) the first band is basal, the last sub- 

 terminal, being apically bordered with whitish, and only one inter- 

 mediate band is present. The basal band is very broad in the middle 

 rectrices. This specimen has some older tail feathers which are 

 similar to those in the true juvenal described above. This may 

 represent the first " winter " plumage. The bird resembles the juve- 

 nal one in the color of the upper parts except the head, which is 

 different in that the forehead and anterior half of the crown are pure 

 whitish slightly tinged with pale buff. The underparts are lighter 



" Journ. f. Ornith., 1004, pp. 157-160. 



