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.
Bare tree. Nest looks like a beginners, but two adult osprey flew off it. It may be blown down in first storm.
But look for nest #6 (or #6147) may also have a nest, but waiting for confirmation of actual occupation.
Female was standing up for half hour while I was in kayak. No nesting. Male dropped a stick for her and she used her beak to place the stick. It looked like activity done back in March -- not now. Have chicks been born -- or possible nest failure?
It appears this nest failed. We had a storm with very high winds come through on the 13th and now half this nest and both the chicks appear to be gone. I was hoping the young were just cowering low, but an adult brought a fish to the nest and ate it themselves, so no chicks.
Today I saw this pair driving off a second-year Bald Eagle that got a little too close for comfort! Both were on the nest together for at least 30 minutes, and they stayed in the viewing area the whole time I observed (an hour)