I find that pretty much every area has an annoying puzzle. Something is either randomized with no indication, can be solved only via trial and error, or controls funny. And the increasing scale of collect quests is getting annoying too. The area after the birds forces you to collect stuff to get a piece of other stuff you're collecting.
I was really enjoying myself until the chicken hunt. It's not that it was bad or anything and it had some funny/cute moments, it just went on too long. Agree with the trial and error, I've run across a few of those.
Gotta get a few zzz's before I hit the next area. Hope the collection quests don't end up at "collect 50 of this" or something. Haha. Still love the game tho...it's just too cute not to. ;)