Stroke is an abrupt interruption of constant blood flow to the brain that causes loss of neurological function. The interruption of blood flow can be caused by a blockage, leading to the more common ischemic stroke, or by bleeding in the brain, leading to the more deadly hemorrhagic stroke.
Most ducks do not start laying eggs until they are between 9-11 months old. Depending on the breed they can lay year round. A duck will lay an egg a day until they have a clutch, between 8-15 eggs and then the mother will sit on them.
Mallards lay between 8-12 eggs and muscovies lay between 12-18 eggs. The egg laying process lasts for an equal number of days (it takes 12 days to lay 12 eggs). Once egg laying is complete, she will leave the male (who will wait at the water for her) and she will begin incubation on the nest fulltime.f an unattended duck nest is discovered and it has less than 8 eggs and there are no signs of predation (broken eggs, disturbed nest, etc), it might be safe to assume that the female has not yet completed egg laying.