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.
a female O at platform just before 7 am, male arrived just after, showed some flirting behavior then took off quickly. Female remained about an hour. She had larger necklace and mottled head. Neither bird is banded. 69 degrees, sunny, breezy,13mph west winds gusting
male brought fish to nest on 6-6-22, morning. not seen since, 3 chicks have not eaten today, female has flown off nest for very short times but has not gone fishing.. she must go tmr to save even one of her 3 beautiful chicks.adult male is reported to be around 18 yrs of age?..
female remaining on eggs during this protracted weather pattern of cold temps in low 50's, heavy rains, fog, high winds since Nor' easter arrived Saturday 5-7-22. Male on nest with female this morning. I am assuming he is able to deliver enough fish to keep this nesting going while other nesting pairs in the area are abandoning eggs or loosing natural nests to the high winds, another tough May for local osprey.
just before sunrise this morning the single chick appeared to struggle for a few minutes and then passed away. reason unknown as it was not cold and the chick appeared normal up to that time. Could this be exposure following a driving rain late last evening, perhaps some sort of toxin? we can't know for sure. Very sad.