This morning I went to check on my chicks, all about a week old, and found one of my speckled sussexs feet up in the waterer, dead. ( My flock is in with a standard chick waterer that we bought from the hatcher, so if it met its demise by drowning, I'm not sure how it managed that, unless it toppled over in its sleep and didnt wake up. There was no cause of concern from illness as this bird seemed healthy, and the rest of the flock is active and doing fine. Is there anything I should check for besides the usual to ensure the rest of my birdies survive? Thanks in advance!