This document contains definitions and explanations of common idioms and sayings that originate from animals and nature. It provides over 30 entries describing idioms like "a bird in hand is worth two in the bush" which means be content with what you have, "bats in your belfry" which means a crazy idea, and "don't count your chickens before they hatch" which means don't dream about anything blindly. Each entry includes the meaning, an example usage, and the origin story behind the idiom's metaphorical use.