L in Ontario wrote:
1. How often do you give this to your finches (ie- 1/year or every 3 months or every 6 months)?
It depends on what type of birds you have and what your housing and feeding routines are. If you do not offer raw live food (mealworms, waxworms, maggots, etc.), and your birds are kept indoors, you really do not need to worm as part of a "prevention" or "maintenance" program.
However, I worm incoming birds once on the first day in quarantine, and once again three weeks later, because you never know with new birds.
Parasitic worms are a contact based problem - meaning, they have to come into direct contact with the worms or ingest the eggs in order to be infected. Birds that have direct exposure to the ground [via an outdoor aviary] are much more at risk than birds housed indoors (their risk is virtually negligible).
However!! - Birds housed indoors that are fed
live foods can contract worms because many of the live foods we feed are carrying vectors or intermediate hosts for the worms (like tape, hook, thread worms, etc.). So if you are actively feeding your birds live foods, I would worm the birds getting the live foods once every three months.
It would probably be best to swap out between Ivermectin and Worm Away, as Ivermectin works against different worms than Praziquantel and Oxfendazole (the ingredients in WA).
L in Ontario wrote:2. Are there any times of the year when you would not give this (ie- breeding with eggs or chicks in the nest, weaning, moulting)?
3. Is there an age minimum that you would not go below (ie- do not give to birds under 6 months of age)?
No - I've asked Bill (owner of Morning Bird) about this myself. He told me he has safely given it to birds throughout all life cycles - laying, rearing nestlings, molting, etc., and does not feel like it is potentially harmful in any respects.
I have to agree, in that I have used it on molting birds, juveniles as young as 4 months old, and laying pairs (when I noticed sudden watery droppings after offering mealworms) without any problems with fertility etc.
It is a very mild, safe product.