Gape worm ( Syngamus trachea ) lives in the birds’ trachea where they are attached to the mucous membrane. In case of severe infection, breathing problems may occur.

Cause: The parasite; Syngamus trachea.
Species : Chicken birds, seals, pigeons and more.
Spreading : Directly via eggs, with larvae or via gap machine-infected earthworms, snails or insects.
Distribution : Worldwide.
Seasonal occurrence : Summer.

Gapmask
Tapeworm
tape mask

These photos are published with permission from the University of Edinburgh