Ducklings + freezing temps

[chixndux]

Help! My ducklings picked the worst weekend to hatch! Two of my females are broody together, sharing a nesting box. I saw one of the first little peepers today... except it’s supposed to drop to 29° tomorrow night! Will they be okay under the moms, or should I set up a heating lamp indoors? I don’t want to disturb them but I don’t want them to freeze to death!

 

[CindyinSD]

I think they'll be okay with their mommies (assuming the mommies know what they're doing), but let's ask @Miss Lydia .