I’m not sure it would be possible for such large animals, they require a lot more energy to keep the heat up due* to larger skin surface.
I could be wrong though, happy to be corrected.
Square-cube law would be in effect - for large animals, things that scale with mass or volume outpace things that scale with surface area. Though what result that would have in this case I can’t quite puzzle out.
I’m not sure it would be possible for such large animals, they require a lot more energy to keep the heat up due* to larger skin surface.
I could be wrong though, happy to be corrected.
Square-cube law would be in effect - for large animals, things that scale with mass or volume outpace things that scale with surface area. Though what result that would have in this case I can’t quite puzzle out.
That’s what the feathers are for.