I see a lot of people who use incubators advising to keep humidity down at 30-50 and then only up to 60-70 in the last few days. I don't use an incubator, I use chickens but our humidity levels, pretty much year round, are about 80-90% in the morning dropping off to 60-70% in the afternoon. Our temperatures range from 30C in the morning to 37C by midday most days, somedays up to and over 40C. Can my little old chooks really regulate the humidity so much? The temperature I can understand because even 40C isn't as hot as a chicken but how exactly do they manage to reduce the ambient humidity by half (all day long) ? I did warn you it may be a stupid question.