Gapeworm
SPECIES OF PARASITIC NEMATODE
Syngamus trachea; Syngamiasis; Y-worm; Y worm
A gapeworm (Syngamus trachea), also known as a red worm and forked worm, is a parasitic nematode worm that infects the tracheas of certain birds. The resulting disease, known as "gape" occurs when the worms clog and obstruct the airway.