Cause – The most common worms found in pigeons today are roundworms hair worms, stomach wall worms, gapeworms, stromglylids and tapeworms.
Symptoms – The symptoms vary with the type of infestation, and conceivably pigeons can live with slight infestations and show no ill effects.
Severe infestations generally cause droopiness, loss of weight and some diarrhea. Gapeworms can cause breathing problems. The best way to determine if a worm problem exists is to have the droppings checked.
Prevention – Clean, sanitary lofts are most beneficial to keeping worms in check, but since pigeons often mingle with many hundreds of other birds, a bird can become infested through ingestion of worm eggs from the basket or through contact with stray pigeons. Therefore, it is advisable to develop a preventative worming program in which all birds are wormed at least twice a year.