Cockatiels sleeping in nesting box

[Echo3]

My cockatiel pair is in the nesting box but have no eggs, it's been like this for a few days now. They just stay in there for no reason

 

[ExoticPetOwner]

My cockatiel pair is in the nesting box but have no eggs, it's been like this for a few days now. They just stay in there for no reason

They're probably getting used to the box and might lay eggs in week or so as ling as they're both sexually able to and are presenting breeding behaviors.