WEED SEED. 



71 



/>'.s7 of irff^fl-.-<t'etI t'fil/'i's and vn'ffl nPfd fiUeii. 



SPiSCIES OF BIRDS WHOSE .vrOM ACHS lOXTAINED WEED SEED. 



Bobwhite. 

 Mourning dove. 

 Horned lark. 

 Bobolink. 

 Cowbird. 



Red-winged blackbird. 

 Meadowlark. 



Rusty blackbird. 

 Crow blackbird, 

 (loldfinch. 

 Savanna sparrow. 

 Grasshopper sparrow. 

 White-throated sparrow. 

 Tree sparrow. 



Chipping sparrow. 



Field sparrow. 



Junco. 



Song sparrow. 



Cardinal. 



Carolina chickadee. 



SPECIES OF WEED SEED EATEN. 



Bull thistle (Carduug lanceolatus) . 

 Beggar-ticks { Bideiis frondosa) . 

 Sneezeweed {Helenium aulumnale). 

 Ragweed ( Ambrosia arlerrdnia:folia, fig. 27 ) . 

 Giant ragweed (Ambrosia trifida). 

 Sow thistle (Sonchus oleraceus) . 

 Dandelion ( Taraxacum taraxacum, tig. 27 ) . 

 Wild lettuce (Lactm-a spicata). 

 Black bindweed [Polygonum convohtnlns, 



fig. 27). 

 Pennsylvania persicaria ( PoIii(/oiiiim penn- 



sylvan'icum). 

 Knotweed {Polygonum iwiculare). 

 Climbing false buckwheat {Polygonum 



!:candens) . 

 Bitter dock {Rumex ohtusifolius). 

 Curled dock {Rumex frixpus). 

 Sheep sorrel {Rumex acetosella). 

 Crab-grass {Panicum sanguinale) . 

 Pigeon-grass ( Chatochloa glauca, fig 27) . 

 Green foxtail grass {Chsetochloa riridis). 

 Broom-sedge {Andropogon rirginicus). 

 Sheathed rush-grass (Sporobolus mgime- 



floTixs). 

 Poverty grass [Arialida sp.). 

 Yard grass {Eleusbie iiidica). 

 Bermuda grass ( Capriola dactylon). 

 Paspalum {Paspalum sp. ). 

 Sedge {Cyperus). 

 Sassafras {Sassafras sassafras). 

 Blackberry {Rubus villosus) . 

 Pokeberry {Phytolacca decandra). 

 Partridge pea {Cassia chamxcrista) . 

 Sweet clover {Meliloius alba). 

 Tick-trefoil {Meibomian.udifiora). 

 Snowdrops {Kneiffia fruticosa) . 

 Chickweed {Alsine media). 

 Amaranth {Amaranihus retroflexus, fig. 

 ■ 27). 



Trumpet creeper ( Tecoma radicans). 

 Yellow sorrel {Oxalis stricta). 



Rib-grass {Plantago lanceolata). 

 Spurge {Euphorbia maculata, fig. 27). 



Fig. 27.— Weed seeds commonly 

 eaten by birds: a, bindweed; 

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

 d, amaranth; e, spotted spurge; 

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

 dandelion. 



Lamb's-quarters ( (Jhenopodium album, 



27). 

 Purslane {Portulaca oleracea, fig. 27). 

 Jewel- weed {Impatiem). 



