SYNOPSIS. 89 



b. Head, not sub-crested. No streakings. 



^ Males yellow in winter and females greenish, wings and 

 tail, black. Resident. American Goldfinch. 42 



- Yellow beneath, with red at base of bill. Introduced. 

 European Goldfinch. 81 



c. Streaked throughout. 



^ Top of head crimson. Wing bands, whitish. Winter 

 visitor. Red-polls. 46 & 48 



='•■' No crimson on head. Wing bars, sulphury yellow. Win-, 

 ter visitor to southern, breeds in northern portions. Pine 

 Siskin. 44 



'•■' No crimson on head. Wings, tinged with sulphury yel- 

 low. Hypothetical species. Brewster's Linnet. 81 



F. Tail, deeply forked. Bill, crossed. 



'••' No white on wing. Frequent winter visitor. American 

 Crossbill. 49 



" White patch on wing. Irregular winter visitor. White- 

 winged Crossbill. 51 



Q. Tail, moderately forked. 



'" Top of head unstreaked ; back streaked, no streaks below. 

 Male with black throat patch, female without. Introduced. 

 English Sparrow. 81 



