I have a flock of six Black East Indies. ALL female. They are about 5 1/2 months old. So today I noticed some serious grooming going on in the water bowl. One will stand there, while another roughly grooms it (and also pulling feathers dominantly). I hadn't ever noticed this before (they usually preen themselves). While being groomed the duck will stick her tail feathers up and put her head down. Yes, I am new to ducks this year, but I can see they want to breed! They have been taking turns doing this. What should we do? Look for some drakes? Are we being mean, not having any boys in there? Will this go on forever?