There is a good chance this runt will die of starvation. They jump up and down on the nest until a wind gust carries them over the edge on their first flight. Osprey parents will fly past the nest with a fish and drop it into the water to help the babies catch their first fish. The babies can usually catch their own fish 2 or 3 days after fledging, but the parents will still bring food for a few weeks. It's not easy for ospreys to find a strong dead tree for their nest.
Many ospreys also have a hard time finding enough fish to feed their babies.
Man has caused some problems for the ospreys too. Some ospreys get shot even though it is against the law to hunt them. Fish soak up DDT from the water. This hurts them in 2 ways. First, it makes their egg shells thin, so the eggs crack when the mother sits on them.