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



Plate II. 



SEEDS AND FRUITS EATEN BY GROSBEAKS. 



[1, Wild black cherry (Prnnus sewtina). 2, Hackberry (Celtis occidentalis). 3, Juneberry 

 (Amelanchier canadensis). 4, Pokeberry (Plnjtolacca decandra). 5, Flowering dogwood 

 (Cornus florida). 6, Rough-leaved dogwood i Cornus asperifolia). 7, Spiderwort (Tra- 

 descantia virginiana). 8, Summer grape ( Vitis aestivalis). 9. Indian fig {Opuntia opun- 

 tia). 10. Bur grass {Cenchrus tribuloides). 11. Button weed (Diodia teres). 12, Milk 

 thistle (Mariana mariniana). 1. Natural size; 2, 5. 9. 10 (bur), magnified twice; 6, 7, 8, 

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



