Done!
I candled the eggs after a week and 7 were empty.
Lockdown started at the end of day 14, because they were wiggling a lot. They started hatching on day 17 and finished on day 18, 2 hatched but didn't make it and 5 didn't hatch.
So there are 13 healthy chicks, 48% of all eggs collected or 65% of the 20 eggs that weren't empty after candling.
Not terrible, considering they were stored for two weeks...
So here is a cute pic of the band - check out the middle guy! He (or she) is the only one of this colour. Most look like the "wild" variety and some look like the "italian" (but of course it's hard to tell on day one).