My silkies don't have a heat source any more but I do like M2H kinda and they have a reg light in daytime and then nothing but the stove light in the kitchen for at night, and they both sing and carry on when it is bed time for about 15 - 20 min, then they are quite until I turn the light back on for them in the morning... Silkies don't sound like my other chicks, they have softer voices. Don't know why I put that in there. lolkaphyper ~ I'm wondering if that's just the normal "organizing for bedtime" chatter. My orp and silkie chicks go through that every evening when I turn the light down to just a nightlight. The Rooster orp starts calling everyone as though they need to head for a nuclear bomb shelter (he's an alarmist type --lol). They all make a lot of peeping and then settle down. Just like my hens, except the hens have to have a nightly battle about who is sleeping where-- and it can be a lot noisier!