I recently saw a post on one of these forums talking about putting a baby monitor in the coop, then I did a search on the topic and read the baby monitor thread from 2009. Now I'm convinced that a baby monitor for the coop would really help keep the girls safe. (The chicks are going to hatch the first week of September). I've never used a baby monitor before and I've never had chickens before. Here's my question: Should I buy the used 2-channel Safety First 475 mhz model that is at my local thrift shop for $5 or, fork over $36.75 for a new Sony 900 mhz 27-channel model that got excellent reviews on Amazon? When I tested the Safety First model at the thrift shop today there was a lot of static but otherwise it had good sound quality and range. I'm thinking that maybe there was extra static in the thrift shop because they had a few tv sets running, i don't know.