Sublingual Impaction in Waterfowl

Summary Information
Diseases / List of Physical / Traumatic Diseases / Disease summary
Alternative Names --
Disease Agents Grass, other food and/or soil.
Infectious Agent(s) --
Non-infectious Agent(s) --
Physical Agent(s)
General Description Bulge visible externally, under the chin. On physical examination, a ball of grass, other food or soil is found lodged under the tongue (B9.4.w5, B11.34.w2, B139).
Further Information Toulouse geese (a breed of Anser anser domesticus - Domestic goose with a heavy dewlap) appear particularly susceptible, and swans are also considered susceptible.


  • Physical removal of the ball with fingers or tweezers.
  • If the condition is left untreated, or recurs, surgery may be requires to remove the 'dead space' or permanent dilatation under the tongue.

(B9.4.w5, B11.34.w2, V.w5).

Techniques linked to this disease --
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Host taxa groups /species
Disease has been reported in either the wild or in captivity in the following WATERFOWL Species: [N.B. Miscellaneous / Traumatic Diseases tend to be under-reported and the majority are likely to affect all waterfowl species, given exposure to the related disease agents/factors.]
  • Swans (B6.4.w5).
  • Toulouse Geese.
  • Black swan Cygnus atratus and mute swan Cygnus olor cygnets (B139).
Disease has been reported in free-ranging populations of the following WATERFOWL Species: --

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