UTILITY OF BIRDS IN FIELD AND GAUD EN. 



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Noxious Seeds 



Bull thistle ( Carduus lanceolatus) . 



Beggar's ticks (Bidens frondosa) . 



Sneezeweed (Heleni/im antnm- 

 nale). 



Hagweetl (^Ambrosia artemisia'- 

 folia) . 



Giant ragweed (^Ainbrosia trifidd) . 



Sow thistle (So)ichiis olcraceus'). 



Dandelion ( 7'(iraxac/nii (araxa- 

 cum) . 



Wild lettuee (^Lacluca sjiicata). 



Black bindweed (^Polygonum con- 

 volvulus^ . 



Pennsylvania persicaria (^Polygo- 

 ninn jiODisylvanicuni) . 



Knotweed (Polygonum aviculare). 



Climbing false buckwheat (Polyg- 

 onum scrmdens) . 



Bitter dock (P^irnex obiusifolius") . 



Curled dock (Rinnex crispus^. 



Sheep sorrel (Bumex acetosella). 



Crab grass (Panicum, sangrmiale) . 



Pigeon grass ( Chcelochloa glauca) . 



Green foxtail grass {Chcetochloa 

 riridis) . 



Broom-sedge (Androjwgon virgin- 

 icus) . 



eaten by Birds. 

 Sheathed rush-grass (H2)orobul/is 



vagince-Jlorus) . 

 Poverty grass (Arislida sj).). 

 Yard grass (Eletisine indica). 

 Bermuda grass (Cajiriola dacty- 



lon) . 

 Paspalum (Paspdlum sp.). 

 Sedge ( Cypjerus') . 

 Sassafras (Sassafras sassafras). 

 Blackberry (Rubtis villosus). 

 Pokeberr)' (Phytolacca decandra). 

 Partridge pea (Cassia chamm- 



crisia) . 

 Sweet clover (Melilotus alba). 

 Tick-trefoil (Meibomia nudijlora) . 

 Snowdrops (Kneiffia fruiticosa) . 

 Chickweed (Alsine media). 

 Amaranth (Amaranthus rctro- 



f exits) . 

 Trumpet creeper (Tecoma radi- 



cans) . 

 Yellow sorrel (Oxaiis stricla). 

 Rib-grass (Planlago lanceolata). 

 Spurge (Etiphorbia maculata). 

 Lamb's quarters (Chenopodium 



album) . 

 Purslane (Portulaca oleracea). 

 Jewel weed (Impatiens). 



