My two lovebirds, Xayah and Rakan (6/7 weeks old), recently started to learn to fly and also got moved into a cage. They both also seem to be eating on their own nicely. Now, everytime I get them out of the cage they have a thing for being on top of my head and nibbling on my ear. What does this particular behavior suggest? They both also try to get out of the cage whenever I walk past it... I don't know if that may also help.