Fruit trees

This is where my absurdly large health meter comes from - eatting these fruit will slightly extend it. Defeating 10 normal mode time-attack colossi gives you a map to all of these fruit bearing trees, but they're not hard to come across otherwise.

In the video you'll notice a large bird briefly swoops through the tree top. This often happens if you're up there for a while - it might be worth seeing where it takes you if you grab on.

Unrelated to fruit trees, but still interesting: If you play on a memory card with an ICO save game on it, the white diamond on Argos' forehead will be replaced by an ICO 'i'. You can see this in the last frame of the video.