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.
Background: This pair and possibly another mated pair have been observed in the vicinity since close to the arrival time of the osprey seen on the platform nest at the marina See Nest#676.
However, there has not been a pair at both locations at the same time. Rather, one or a pair have been seen at either location at various times.
A pair was seen on the nest (see distant photo) and observed mating. The male took off and flew over the parking lot along the creek line and in the air I saw a mature bald eagle, and two osprey --and the female was still sitting on the nest in the dead tree. At one point the four were near -but keeping their distance-from each other. Not long after I saw an osprey land on the platform and another osprey fly nearby the platform. Still the one in the tree remained on the nest.
So it is still unknown what the situation is with the platform nest. Could the other two osprey seen be from nest#7057 (which is on Channel Marker 15 at "The Point" in New Quarter Park) -and were just fishing? You may post your observations in the diary update
Discovered by cohort XII Master Naturalist, Robin Culler, on the 5th of May while watching fighting activity in the air with eagles and osprey. Nearby is Queen's Lake Marina nest #676 that I monitor. Earlier in the season, two osprey were struggling to find a place since their nest from last year was no longer there.