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.
Around 7 am, juvenile and adult were in the nest and another adult was on a nearby tower strut apparently eating a fish. The juvenile was occasionally flapping and making begging noises. When I returned about 10 minutes later, the juvenile was by the adult with the fish--the adult flew off. The juvenile was moving around, trying to get its footing--one foot was on something it could grip, the other on something that looked more like a peg than something it could grip. After a minute or so, the juvenile dropped down and started flying. It looked like it was not a proficient flyer in that it made sudden drops and side banks rather than a straight smooth flight. It looped the parking lot, went back up to the tower, looked like it would land but didn't, did another loop of the tower, then landed. It did not look like there was another nestling, but I will check again. Although I have marked this as its fledge date, that is an approximation as I had not been by the nest for several days.
First time I spotted an osprey on the tower was 4/1/23--there was only one. There were definitely two osprey on 4/4/23. On 4/6/23 the male sky danced for about 10 minutes. During that time, the female moved from a lower bar up to the nest.
Nest remains active. One adult appeared to be feeding at the nest this morning around 7:15 am. I have still not been able to spot chick or chicks. Yesterday, both adults were on the tower though not actually on the nest at about the same time.
4/5/22. One osprey was flying low over parking lots around Ocean Blvd apparently looking for nesting materials. It flew back up to the radio tower. A second osprey arrive within about a minute with a fish and joined the other at the nest on the tower.