The chicks are fine. I’ve raised several and it takes a lot to kill em. I’m just stating what I grew up learning and I’ve never killed one bird from lack of heat. I think she’s doing perfect.
No need to get aggressive. I’m just trying to help out. Also, heat lamps produce more heat. Which differs from a lightbulb in many ways and isn’t as bright. But either one works.
I was saying even without a heat lamp I’m sure they are fine with a light bulb. The chicks also produce heat that is keeping them warm too. Just keep them warm, and fed and happy and you’ll have some hens.
They need the lamp for the time that they still have fluffy down feathers on them. There’s not really a set time. I had my chickens on heat lamps until they were old enough to go outside. I’m sure they’d be fine even without the lamp. They have each other for a heat source.