WEED SEED. 



71 



List of tveed-seed eaters and weed seed eaten. 



SPECIES OF BIRDS WHOSE STOMACHS CONTAINED WEED SEED. 



Eobwhite. 

 Mourning dove. 

 Horned lark. 

 Bobolink. 

 Cowbird. 



Red-winged blackbird. 

 Meadowlark. 



Rusty blackbird. 

 Crow blackbird. 

 Goldfinch, 

 Savanna sparrow. 

 Grasshopper sparrow. 

 White-throated sparrow, 

 Tree sparrow. 



Chipping sparrow\ 



Field sparrow. 



Junco. 



Song sparrow\ 



Cardinal. 



Carolina chickadee. 



SPECIES OP WEED SEED EATEN. 



Bull thistle {Carduus lanceolatus) . 

 Beggar-ticks ( Bidens frondosa ) . 

 Sneeze weed {Helenium autumnale). 

 Ragweed ( Ambrosia artemisisefolia, fig. 27 ) . 

 Giant ragweed {Ambrosia trifida). 

 Sow thistle {Sonchus oleraceus) . 

 Dandelion ( Taraxacum taraxacum, ^g. 27). 

 Wild lettuce {Lactuca spicata). 

 Black bindweed {Polygonum convolvulus, 



fig. 27). 

 Pennsylvania persicaria {Polygonum penn- 



sylvanicum). 

 Knot weed {Polygonum aviculare). 

 Climbing false buckwheat {Polygonum 



scandens). 

 Bitter dock {Rumex obtusifolius). 

 Curled dock {Rumex crispus). 

 Sheep sorrel {Rumex acetosella). 

 Crab-grass {Panicum sanguinale). 

 Pigeon-grass ( Clixtochloa glauca, fig 27) . 

 Green foxtail grass {Chsetochloa viridis). 

 Broom-sedge {Andropogon virginicus). 

 Sheathed rush-grass (Sporobolus vaginse- 



florus). 

 Poverty grass {Aristida sp.). 

 Yard grass {Eleusine indica). 

 Bermuda grass ( Capriola dactylon ) . 

 Paspalum {Paspalum sp. ). 

 Sedge {Cyperus). 

 Sassafras {Sassafras sassafras). 

 Blackberry {Rubus villosus) . 

 Pokeberry {Phytolacca decandra). 

 Partridge pea {Cassia chamsecrista) . 

 Sweet clover {Melilotus alba). 

 Tick-trefoil {Meibomia nudiflora). 

 Snowdrops {Kneiffia fruticosa) . 

 Chick weed {Alsine media). 

 Amaranth {Amaranthus retroflexus, fig. 



27). 

 Trumpet creeper ( Tecoma radicans). 

 Yellow sorrel {Oxalis stricta). 



Rib-grass {Plantago lanceolata). 

 Spurge {Euphorbia maculata, fig. 27). 



J M.. J7.— Weed seeds commonly 

 eaten by birds: a, bindweed; 

 b, lamb's-quarters; c, purslane; 

 d, amaranth; e, spotted spurge; 

 /, ragweed; g, pigeon-grass; h, 

 dandelion. 



Lamb's-quarters ( Chenopodium album, fig. 



27). 

 Purslane {Portulaca oleracea, fig. 27). 

 Jewel-weed {Impatiens). 



