See below for update!
I'm so gutted. I had 2 LF light sussex hens both go broody at the same time. I gave the first hen some eggs to sit on and during that time the other hen just sat on eggs in the nest boxes that had been laid that day until they were taken out in the evening. First hen hatched out 2 chicks. The 2nd hen stayed broody so I gave her some duck eggs 11 days ago. She's been sitting tight on them, kicked a few out but the rest I candled 2 days ago and all 11 were fertile and moving.
She was sat on them at 11am this morning but I've just gone to collect in today's eggs at 5.50pm and she's obviously got off for a drink this afternoon and gone back and sat on a couple of chicken eggs that were laid today in the other nest box
I immediately put her back on her duck eggs and she fluffed herself up and sat on them, but they weren't exactly warm. I guess they will all have died now? Should I candle them in a few days or leave them under her and see what happens? I've got a plentiful supply of duck eggs so will start again with the incubator if these ones haven't made it... more annoyed that she might have blown it