It would work fine. But...if you're like us, and you have a compost pile which everything gets thrown into (including chicken poop), then it really doesn't matter as the compost gets added to the garden beds in the Spring anyway.
What a lot of people I know do is this: during the winter when the garden is fallow, you can let your chickens into that fenced area for the day. They get to pick, scratch, debug, etc. In the Spring, you turn over your soil and add in the compost.