Do budgies lay eggs if theres cockatiels in the cage?

Well you never really know.If your male budgie is tapping his beak against the females beak or the perch or something,that could be a sign.He might regurgitate food for her.Or even puff up his feathers and dance for her.Another thing is male budgies have been known to sing really loud for her and bob his head.The males like to try and impress the females as you can see!