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.
4:40 PM - have not found a location with an angle/view of inside the nest. An adult Osprey flew in from the northeast and landed beside the nest shortly after I arrived. 93 degrees F and sunny. I uploaded two photos. This morning, it looked like adult osprey was tending to center of nest. (Chicks?)
I drive by this nest twice daily on weekdays. Although the nesting material is quite high, it is loosely 'constructed,' and I have not seen Ospreys here since. What I saw might have been young Ospreys building and end of season practice nest.
8:08 AM: Surprised to see Osprey carrying long branch (!) at this time of year. Carried it to a cell tower used for nesting in past years. This year however the cell tower was occupied by humans and cables in May/during the ospreys spring nesting season. Will the ospreys nest, breed and rear young this late in the season?
8:55 AM: Photoed two adult Ospreys at nest on bottom platform of cell tower, and one Osprey flying by. One or more Ospreys vocalized. About a half hour earlier, I stopped in shock to see an Osprey carrying a branch to this nest!
Surprised to see nest building **starting** so late in the season; but this cell tower was unavailable to the Ospreys earlier this year. I recall seeing humans and cables occupying the cell tower for weeks in May (at the beginning of Osprey nesting season).
5PM-Ospreys have nested on cell tower in prior years. No Ospreys and no evidence of nest building this year - likely due to equipment and cables suspended from top of cell tower. Man is working on bottom of two platforms right now and two cables are run from platform to ground. Equipment and cables were run last month too. 80°F and mostly sunny
A few days ago, I noticed a crane up against this nest's cell tower. <I thought, They had all year, why wait within days of the Ospreys' return to work on this tower?" I thought about calling; but bird protection laws were changed this year.> ...The next day, the crane was gone; but there were wires from the ground to the top of the tower. Then I saw a worker at the nest, and another day, I saw a worker climbing up the tower.
Stopped by briefly. This is a hard nest to see as it's right in the middle at the top. I don't think there's any question that there are 2 nestlings in the nest. I could easily hear them as an adult approached and then landed on the tower.
I was on my way home from Money Point this am when I saw an Osprey (male?) delivering a stick to the nest. Didn't realize there was a nest there! I could see the nest, which looked small. Will return later to observe/photograph.