Light as an attractant makes quite a bit of sense. I believe aart's right that your author's context for the three days of light is meant more for large numbers of chicks.
When I was a kid, we would occasionally visit my uncle's commercial poultry farm. He had thousands of baby chicks in huge barns, a sea of little tennis balls as far as the eye could see. We would go out with him in the morning and he would pick up hundreds of dead chicks that had been trampled and suffocated by the hoards of other chicks. Now I wonder if part of those casualties was due to the dark at night. He didn't use electric lights, but propane brooding hovers.
I use a small night light or flashlight when teaching chicks to go into the coop at night after first being moved in. It really does help. Chicks get scared of the dark and can't find their way. It probably does help new chicks learn their way around. But if you're using the heating pad system, I would just use a small night light, not a bright 250 watt flood light.
When I was a kid, we would occasionally visit my uncle's commercial poultry farm. He had thousands of baby chicks in huge barns, a sea of little tennis balls as far as the eye could see. We would go out with him in the morning and he would pick up hundreds of dead chicks that had been trampled and suffocated by the hoards of other chicks. Now I wonder if part of those casualties was due to the dark at night. He didn't use electric lights, but propane brooding hovers.
I use a small night light or flashlight when teaching chicks to go into the coop at night after first being moved in. It really does help. Chicks get scared of the dark and can't find their way. It probably does help new chicks learn their way around. But if you're using the heating pad system, I would just use a small night light, not a bright 250 watt flood light.