I've wondered about this: do they huddle? My emus display lots of obvious siblings-are-happier-together behaviour, but I've never seen them asleep, 'cause they head off into the bush at dusk.
(Fences confuse them terribly. On a couple of occasions, two of the chicks were down at the fig tree...
Dingo, I don't know. However . . .
emus chicks in Oz are growing up through Spring. The coldest areas of their range are still bloody cold in Spring (the Alps over East). The hottest areas of their range (say, north-west W.A.) are already eighty plus by mid-Spring.
One ten is a piece of cake...