>I looked for a FAQ on this but didn't see one. Can someone
>please tell me which houseplants I can safely keep in the flight
>cage with my finches?
I don't have a species-by-species list of what is safe and what is not,
but in general I wouldn't trust any plant that you haven't either grown
yourself from seed or had in your possession for a long time. The
commercial floriculture industry uses lots of chemical pesticides and
fungicides, some of which are systemic and cannot be washed off. Even a
plant of a species that is not toxic per se may be fatal if it has been
treated with some of these chemicals. I think this may be one of the
reasons there is so much difference of opinion on what species are safe.
If someone's bird eats a plant and dies shortly thereafter, they assume
that the plant species in question must be toxic to birds. I would
suggest potted herbs and veggies. If they're intended for human
consumption than the use of chemicals is highly regulated, and inherent
toxicity shouldn't be a problem. I'd avoid the Solanaceae (tomato
family): tomatoes, potatoes, etc.