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.
Heard chirping sounds from the nest when parent flew off. Don't know how many nestlings. Parents keep close watch. No nestlings visible but know they are just lying low. Sometimes I've thought they were left alone but would find one of the parents camouflaged in the tree.
There were three observers in our group today.We saw the female and briefly saw one good sized chick. Did not see evidence of any more than one.The female appeared to be concerned about our presence as she had a fish and a nestling to care for.
The male was observed on a branch with a very large fish. Female was in the nest and strongly suspect there are chicks in the nest although the height of the tree and depth of the nest makes it impossible to verify. Many house sparrows nesting in the lower portions of the nest.
The female was observed walking around the nest and carrying a stick to the nest. She flew off briefly and returned. Hatchling (s) are assumed to be in her care now. Photo only captures the wing of the female as she landed back in the nest.
Again observed the male eating a fish on a branch near the nest. Female still low in the nest and couldn't get a photo, however she was making a lot of calling sounds but the male didn't bring the fish to her.
This nest was brought to my attention by an individual who occasionally visits the area and observes and photographs osprey. Today photos were taken of the male with his catch of fish. Both male and female were observed on the nest.