Nice thread to start. I knew nothing about Langshans until I met a lady with a SQ flock last fall. I bought call ducks from her, and when she put out the call that she needed to also part with her Langshans to focus elsewhere, I bit. The champion roo went to PA, but my BYC friend and I split the rest of the flock. The roo fathered most of the flock anyway, and we are seeing very nice quality birds. At Ohio Nationals I found a Langshan breeder who had blues and came home with a blue hen to throw in for fun. So, I believe I have 9 adult blacks, 3 juvenile blacks, and one blue.
I'm learning by hands-on experience.
So far I've discovered that they go broody. When we picked up the flock, two hens had just hatched out a small, shared clutch. But one hen quickly abandoned the motherly thing to roost with the other adults. The other hen also seemed flaky about mother and the nights were cold, so I still have 3 juveniles living in my garage.
They seem very winter hardy. We've had temps down to 0, and so far the roos' combs are looking good. They don't like snow, though, and they haven't been laying any eggs -- until yesterday I found one splatted under the roost. Their appetite really doesn't seem that big for their size either.
This flock seems aloof to human interaction, but generally gentle.
I look forward to breeding season.
I need to get pictures, but this is a poor time with them holed up inside.