Hey,

is it okay to use this nestbox for my parakeets couple ?

basically it's a cockatiel nestbox but it's the best I can find in my area concerning the quality of wood and the size, it's a bit large for a parakeet I guess but would it be a problem ?

Yes, just make sure you have something to keep the chick's legs from slipping and getting splayed legs.

it contains a concave insert I guess that will do, Thanks you