STREAKED PATTERN. 617 



Breeding here and northward : 



Both sexes streaked above and below 2 



Female streaked above and below 1 



Both sexes streaked above . „ ~ 



Adults not streaked . , .. - 



1 

 Breeding here and southward : 



Both sexes streaked above and below 



Female streaked above and below ..... - 



Both sexes streaked above 5 



Adults not streaked 2 



7 



In Family Icteridae, though we have not the same type of plumage throughout, the 

 arranagement may be as follows : 



1. Sturnella magna, 



2. Soolecophagus ferrnglneus, 



3. Dolichonyx oryzivorus, 



4. Agelasns phosnicens, 



5. Molothrus ater^ 



6. Icterus baltimore, 



7. Icterus spurius, 



8. Qaiscalus purpnreus, var. senens. 



The first exhibits the streaked type of plumage in both sexes, and is nearly resident 

 with us. The second, the only species breeding exolnsively to the north of us, presents 

 in the fall a change of plumage similar to that of the young. The third, whose south- 

 ern breeding range is with us, presents a highly developed plumage in the male while 

 the female resembles the young, retaining the streaked plumage, to which the male re- 

 turns in the fall. The fourth, presents the same difterence in sex as the third, except 

 that the male retains its spring pattern of plumage permanently. In the fifth 

 species the male and female have both outgrown a streaked plumage in the young, but 

 the male acquires a higher developement of plumage than the female, and breeds both 

 to the north and south of us. In the two Orioles the males differ from the females in 

 brighter colors and more definite pattern, and undergo no marked change of plumage in 

 the fall. The Orchard Oriole is more southern in its breeding range than the Balti- 

 more. The last species presents but little difference in the plumage of the male and fe- 

 male, and the young, as is also the case with the Orioles, is not streaked. 



We have now considered the relations existing between young and old and different 

 species of birds of the spotted, barred and streaked type of plumage, using for this pur- 

 pose the largest families in which these types are especially noticeable ; fortunately they 

 are the larger families of the Oscines. I have made no mention of the large famUy 

 Sylvicolidae, for the reason that it presents different types of plumages in different genera, 

 and, among those of streaked pattern, few birds which afford comparison by 

 reason of marked differences in southern breeding limits. Of the Sylviidai, Paridae, 

 SittidsB, TanagridsB, VireonidsB, Ampelidse and Coividse, it may be said that they possess 

 no pattern of coloration, the body plumage being generally of uniform, dull or neutral 

 tint in which the young and adult resemble each other. The same is true of snb-ordei 

 Clamatores. Family Hirundinidss presents no marked variations to confirm or 



