I assume you mean indoor, pet birds. Cover their cage with a cloth that does not let light in.
Falling asleep: voluntary Being put to sleep: involuntary
Put their Bra and Underwear in the freezer(when they are asleep) Put shaving cream in their hand and tickle their face(when asleep) Draw on their face with a washable marker(when they are asleep) hide their clothes and toothbrush(when they are asleep)
it put you asleep
anathesiologist
A sharp pain of teeth signals danger while birds are asleep
you dont
She made them fall asleep
knock them over the head with pan .
the put the dino asleep
Put her/him asleep.
A cadge
Birds put their money in a nest egg.