This critter shelter was built last fall from hurricane downed oaks. It's a simple stack of 6 foot long logs set in a lightly wooded area. Not only does it provide temporary shelter for lizards, snakes, field mice etc, but it's a semi-permanent home for all kinds of insects which are fed on by nearby birds. Moths and butterflies will use log piles like this to overwinter. Wood decomposes quickly here in the subtropics, so the end result of this temporary shelter will be some rich compost where the log pile once stood.