1910] Swarth: Two New Oivh from. Arizona. 7 



connection of two young birds in the collection of Mr. G. Frean 

 IMorcom (now on deposit in this mnseum), which were secured 

 by him in IMillard Caiion. near Pasadena. California, on June 6, 

 1902. The two birds apparently formed the entire brood, and 

 were accompanied by both parents, who made their escape by 

 flight. The 3'oung were able to fly but a very short distance, 

 so, of course, must have been hatched in the immediate vicinity. 

 They are in the juvenal plumage throughout, but for the rectrices 

 and remiges, which have grown out to about two-thirds of their 

 total length. The head and entire body is covered with thick, 

 soft down, much lighter in color than the plumage of the adult. 

 The ground color of the old owl is about Front's brown (of 

 Ridgway's Nomenclature of Colors), while the body plumage of 

 the young is wood brown, and the head is still paler, almost ecru 

 drab. The head is unmarked, while the entire body — back, 

 breast, and abdomen — is traversed by narrow but distinct bars 

 of slightly darker brown. The dorsal plumage is tipped with 

 very light-colored — almost white — filaments, which give the entire 

 upper parts a hoary appearance. The flank feathers are very 

 long, almost covering the toes, are the same color as the rest of 

 the underparts, and are faintly barred with narrow markings 

 of a slightly darker shade. The under tail-coverts are uniform 

 with the flanks and are also faintly barred. Legs and toes are 

 covered with light-colored down, almost white, and are un- 

 marked. The white spots on the outer wel)s of the primaries 

 and secondaries are clear and distinct on the exposed portion of 

 the feather, l)ut the covered portion of the same spot is abruptly 

 dark brown, but little paler than the rest of the feather. The 

 rectrices are practically as in the adult, dark brown traversed 

 by narrow bands of a paler shade of brown. In these bands 

 also the extreme ends (the only parts exposed in the closed tail) 

 are almost pure white, so that the general effect is of white bars 

 across the tail. 



The specimens I have had available for comparison in the 

 present paper are as follows : 



