OK, I have read a few different answers on this forum about when ducks first lay, but most of them involve pure bred ducks. But we brought home a couple Welsh/Khaki's the last week of June this year. FYI, it appears that the drake looks most like his Welsh father and the girls will probably look like their Khaki mother, even though they are mixed. We have been expecting the first of the egg laying starting this weekend, at around 20 weeks. But nothing so far. I have read it may take another 4 weeks too. Does mixing them change anything too dramatically? The temps here in Indianapolis have been dropping into the 30's at night. I have been keeping a light on into the night and early morning to simulate extended hours (15/16 hours) since early fall, and have a heat lamp on all night. So, any thoughts on first laying or just wait a few more weeks and keep checking?? Thanks.