Canaries particularly in an outdoor aviary are much more susceptible to internal parasites or worms, which can be passed from wild birds, insects, and from bird to bird when in a single colony.
Worms including: Thread Worm, Tapeworm, Roundworm, Caecal Worm, and Hook Worm.

Birds get worms by eating an insect that is infested or by ingesting a worm egg passed by another bird.

If your canary is losing weight, ("going light"), it would be a good idea to have an avian veterinarian look at the droppings. Under a microscope eggs will be clearly evident if your bird has worms.
The damage to your bird varies by the type of worm.

It is recommended that you treat your birds particularly if housed outside, with a bird wormer. This should be done according to instructions (which is sometimes an over kill), and at least annually.

Product Name : WORMOUT GEL (
Product Size : 50mL 100mL 250mL 1litre
Ingredients : Praziquantel, Oxfendazole
Guaranteed Analysis : Praziquantel 20g/L and Oxfendazole 20g/L
Directions : All Aviary Birds - add 1mL to 80mL of water. Supply medicated water for 2 days. Remove other sources of water during treatment. Aviaries should be treated at least four times a year.
Directions using Crop Needle : Fill a 1mL syringe with Wormout Gel and deliver. Administer 0.05mL per 100g body weight, once. Repeat three monthly

Notes: Soluble bird wormer.
Oxfendazole and Praziquantel are the actives in Wormout Gel. They are recognised as two of the safest wormers available and their combination covers all the major worm species found in birds includingThread Worm, Tapeworm, Roundworm, Caecal Worm, and Hook Worm.

Published 12/4/2004