Our 3-month old cochin sounds quite hoarse compared to our other one (we just have two), no discharge from nose or eyes, no coughing or sneezing, happy, healthy, normal poop and sleep habits. She's been this way for about a week, this is their fourth day spending the night outside, where it drops to a chilly California fall temp of 50-60 degrees. Just a box of pine shavings in the coop to sleep in. Voice change? She sounds like a rooster. Should I take her to the vet for a possible respiratory infection?