We have a slew of ducks that are 10wks to 4wks of age. All hatched in incubators then moved out to the duck pen. We just got a small wading pool for them and gave them access into and out of it. We found two drowned two days ago and this morning we found five drowned. We don't see any agression from the 10wk olds. What in the world could be going on? We have emptied the pool until we get some solid advice. We are aware that incubated ducks do no have water repelant oil as natural born but they were not introduced until they were at least 3 wks old. Is this still to early or do we have a Drake possibly drowning them? The drowned ducks have not been all the younger ones. Any advice!!!