Birch loves it when I pick him up and hold him as he stands on the windowsill. There's a green space behind our house that dips on one side and after a rain it fills with water. Normally there are then ducks that hang out until the water is gone. Birch likes to look for the ducks. If there aren't any he then searches for "tweet tweets" or birds, as he just recently started to call them. Something so simple that makes him so happy ;)