Answer:
The more there is the less you see.
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
I am not very commonly found! Only in some rainforest! I have an odd number of toes! I'm very lazy and hang upside down!
My first is in riddle but not in little. My second is in think but not in brink. My third is in thyme but not in time. My fourth is in mother but not in brother. My last is in time but no t in climb.
I am a daily ritual involving using a metal tool on the body
Why was the cook arrested?