The only poisonous flying animals are insects.

Bees, ants; cryptid beetles, some coriander beetles (such as cantharides), some burial beetles (such as the large black burial beetle) and other beetles; venomous moths, some butterflies, moths; corpse crickets and a few other direct beetles

Winged insects.

If we include virus and bacterial carriers, there are also hemipteran insects such as leafhoppers, planthoppers, aphids, and stink bugs; dipteran insects such as flies, mosquitoes, gnats, and flies; and cockroaches.

The number of insects is huge, and some species in the tropics have mutated to become highly toxic, but the groups are so small that it is difficult to list them all.