Look for 2 adults on the nest. The adult pair will show pair bonding behaviors such as vocalizations, aerial sky dances, and the male feeding the female fish. You may see the pair copulating, which typically begins 14 days before laying eggs.
Females will lay 1 - 4 eggs at a rate of one egg every 1 - 2 days. After laying, incubation starts. Look for adults taking turns sitting low in the nest incubating eggs. The incubation period can last 35 - 43 days.
Chicks hatch ~39 days after incubation begins. Look for adults bringing food to the nest and making "head bows" into the center. Chicks typically can't be seen until they are 2 - 3 weeks old, so feeding behavior is the only way to know chicks are there.
Around 4 weeks after hatching, look for the heads of chicks to show over the rim of the nest, particularly when adults bring food to the nest. Other times they lie flat and are harder to see. Count the number of chicks in the nest before they learn to fly
Chicks begin flying around 7 - 8 weeks old, and are still fed by the adults. Count the number of chicks who have successfully fledged the nest and are observed flying.
Chick Last Observed
4 - 10 weeks after fledging, chicks begin leaving the nest area to migrate south, once they have learned to fly and feed themselves. Record the date that the last chick left the nest.
Look for signs of nest failure like adult abandonment, adults no longer incubating eggs or feeding young.
October 23 I keep seeing a juvenile Osprey flying overhead and I believe, though I'm not certain, this is one of the birds from this nest. I saw him again today with a fish. All of the other Ospreys have left some time ago.
Sometime between July 10 and July 13 the pair lost one of their 3 chicks. When I returned on July 17th I noted only 2 chicks in the nest and I looked at previous photos and saw 3 only through July 10th.
on 6/01/12 I observed a change in behavior. The male had been perched near the nest while the female laid in the nest. On this day, the male brought a fish to the nest and the female tore pieces and, while I couldn't see at the time, she fed them to at least one chick. After enlarging photos there appear to be at least 3 chicks possibly 4.
Observed pair mating again today. The male then left for about an hour and returned with a small flounder. He made a teasing pass over the nest but moved to a perch and ate it rather than give it to the female.