Our birds haven't done this... yet.
'Rat bird' feels at home
(Katrien Smit, News 24)
Rottie the rat thinks he is a bird... But it comes as no surprise when one realises that Madam and Tokkelos, two lovebirds, are raising this rodent. ... "One day we realised the birds were carrying on as if they were breeding but there were no eggs. That's when we discovered the small pink rat in a nest."(via Fark)