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.
Mother and chick both resting in the nest. Eventually the female flew, could here here calling but the foliage is so thick could not locate her. chick then also flew and then it started pouring rain again..
Only one chick with the female. The chick is doing a lot of flapping of his wings so fledging must be close. Male flew in with a fish and then away. Have not located the males feeding perch, it could be above me in the trees.
Female on nest incubating. A sail boat came very close to the mile marker/nest, frightened the bird, and she flew away briefly. A large bald eagle is perched in a tree across the creek. I had not seen the male osprey although I heard him calling. Did not see any signs of feeding, although they could have finished before I arrivedarrived The male flew in and around the eagle, but the eagle stayed put, at which point the male joined the female on the nest. Hope they survive.