UTILITY OF BIRDS IN FIELD AND GARDEN. 281 
Noxious Seeds eaten by Birds. 
Bull thistle (Carduus lanceolatus). 
Beggar's ticks (Bidens frondosa). 
Sneezeweed (Helenium autwm- 
nale). 
Ragweed (Ambrosia artemisie- 
folia). 
Giant ragweed (Ambrosia trifida). 
Sow thistle (Sonchus oleraceus). 
Dandelion (Zarazacum taraxa- 
cum). 
Wild lettuce (Lactuca spicata). 
Blaek bindweed (Polygonum con- 
volvulus) . 
Pennsylvania persicaria (Polygo- 
num pennsylvanicum) . 
Knotweed (Polygonum aviculare). 
Climbing false buckwheat (Polyg- 
onum scandens). 
Bitter dock (Rumex obtusifolius) . 
Curled dock (Rumesx erispus). 
Sheep sorrel (Rumex acetosella). 
Crab grass (Panicum sanguinale). 
Pigeon grass (Chelochloa glauca). 
Green foxtail grass (Chetochloa 
viridis) . 
Broom-sedge (Andropogon virgin- 
icus). 
Sheathed rush-grass (Sporobulus 
vagine-florus). 
Poverty grass (Aristida sp.). 
Yard grass (Eleusine indica). 
Bermuda grass (Capriola dacty- 
lon). 
Paspalum (Paspalum sp.). 
Sedge (Cyperus). 
Sassafras (Sassafras sassafras). 
Blackberry (Rubus villosus). 
Pokeberry (Phytolacca decandra). 
Partridge pea (Cassia chame- 
crisla). 
Sweet clover (Melilotus alba). 
Tick-trefoil (Meibomia nudiflora). 
Snowdrops (Kneifia fruiticosa). 
Chickweed (Alsine media). 
Amaranth (Amaranthus 
flecus). 
Trumpet creeper (Zecoma radi- 
cans). 
Yellow sorrel (Oxalis stricta). 
Rib-grass (Planiago lanceolata). 
Spurge (Huphorbia maculata). 
Lamb’s quarters (Chenopodium 
album). 
Purslane (Portulaca oleracea). 
Jewel weed (Impatiens). 
retro- 
