Wow. That's really something. I have to say, while I'm philosophically on the side of letting nature (a broody hen) do this job, right now I have two broodies sitting on eggs and it's kind of a mess sometimes. The pullets coming in to lay want to get right up in their broody nests to put their eggs too, even though I make them their own nice places to lay, and the broodies kick them out and its a squawking drama. Dealing with animals who want to do things their own way is a tremendous learning experience, but not exactly convenient.
There are some big agricultural supply stores in Ecuador of course that sell agrochemicals and fertilizers, etc. Monsanto Bayer relentlessly sends their minions into the Global South. Some of these stores sell chicks from brooders, but they are for meat and intended to be slaughtered at 4 months. Everyone knows they wouldn't live long enough to lay eggs. But for "ponedoras" -- laying hens -- the rural folks keep broody hens for setting and mothering because they believe the natural process creates more resilient chickens. And it's just easier and cheaper when you have a broody than buying all the equipment. Most folks here eat their hens after two laying seasons. I'm the "gringa loca" with the ancient chickens (even though my oldest are only four).