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.
Laying Can Take Two Weeks. Duck eggs are inert when laid. Their incubation period doesn't begin until they're under the warm body of the mother duck or surrogate, or in an incubator. Unless the weather turns freezing, with a bit of insulation the eggs will keep just fine and remain viable during the laying period.