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.
Male spotted on the nest this morning. First Osprey sighting of the 2021 season for me - and definitely one of the first in the area as Ive been searching for the last few weeks - especially last few days with the 60 degree weather.
Saw this next occupied for the first time this morning - 3/16/19. Male and Female are holding on during the strong winds after frontal passage last night. They look healthy, and the platform looks to be in top shape. Looking forward to a great season! Pic uploaded.
I usually see two chicks - but see one in the nest today - I believe the other was nearby as the female was torn between going near to the far trees on the other side of the road and keeping an eye the nest.
Both male and female on nest. Male flew off to favorite tree across the street. Female rearranged twigs in nest. Made egg nudging motions in bottom of nest (eggs?). Female began to call out as a Red-Tail Hawk flew past overhead. After 2 mins, Female flew off nest leaving it unoccupied. Very warm day - 68-72 degrees. 3:45PM