I have 2 ducklings that came in a order of chicks, I ordered the surprise box from cackle hatchery. They will be 2 weeks old Monday. The ducklings have been in the brooder with the chicks this whole time. I removed them last night and had them in their own brooder but the duckling scream so loudly without the chicks. I placed the ducklings back with the chicks and they was OK, quite as a mouse. Any ideas on what I should do? How long is it OK to keep them together? I have never had this problem.