Bui. 32, Biological Survey, U. S. Dept. of Agriculture. 



Plate II. 



SEEDS AND FRUITS EATEN BY GROSBEAKS. 



[1, Wild black cherry {Prunus scrotiiia). 2, Hackberrv (Oltis orridnitalis). 3, Juncberrv 

 {Ainikuichicr canadciisifi). 4, Fokcbcrry {Pin/tolarra d<ran(lm). 5, Ploworinfi doswodrt 

 {Comus JtorMd). (j, Rough-leaved dogwoixl l Conius uspcrifalid). 7. Spiderwort ( Tcd- 

 dcscaiitia ririiuihum) . S, Summer grajK' ( Vitix a'stivalis). 9, Indian tig (Opuniiu ojiini- 

 tia). 10. Hnr gras.s (niirhnis tril)ii/(ii(ln<). 11, Button weed (Dioilia teres). 12, Milk 

 thistle {MariaiKt inarininiui). 1, Natural size; 2, 5, <J. 10 (bur), magnilied twice; 6, 7, 8, 

 11, 12, magnified three times; 3, 4, 10 (seeds), magnified four times.] 



