Many breeds no longer have a broody instinct. However Brahma do. For best luck provide a brahma hen with a nest of her own that will not be disturbed by other birds. Leave the eggs in the nest, or replace them with dummy eggs as fresh eggs are laid. With some luck the hen will start brooding when the clutch is complete; 5 15 eggs. Chickens take app. 21 days to hatch.Anyone have any advice on how to get a hen to hatch eggs? I dont have any broody girls and would really like to see if I could get some chicks this spring. Would love to have some Brahma babies. So I need to know how to make a hen brood. Also how long does it take for eggs to hatch?