The picture isn't from the OP.
Breed identification requires a photo and is hardly an emergency. But, given your description of where you got her, I'd bet you have a barnyard mix.
Pullets rarely go broody so I'd also do some watching to be sure that is what's going on rather than hiding from bullies or feeling poorly. Broodiness looks like extreme possessiveness of eggs and a hen only briefly leaving the nest for food/water/bathroom break and spending all of the rest of her time on that nest. Just sleeping in a box isn't broody.
Breed identification requires a photo and is hardly an emergency. But, given your description of where you got her, I'd bet you have a barnyard mix.
Pullets rarely go broody so I'd also do some watching to be sure that is what's going on rather than hiding from bullies or feeling poorly. Broodiness looks like extreme possessiveness of eggs and a hen only briefly leaving the nest for food/water/bathroom break and spending all of the rest of her time on that nest. Just sleeping in a box isn't broody.
