Beside birds, also beautiful insects like butterflies, dragonflies (beside ponts) and also amphibians like frogs (also beside ponts) would be nice.
There is no need to interact with them, it is enough that they are in the playing world here and there and also many different kinds, not just many.
i would really like to interact with them tho TuT the idea of catching butterflies and displaying them in jars makes me so happy. (specifically in a videogame where they can just happily flutter in one place in the jar and not die or anything...)