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.
The solitary nestling did not want to leave the nest yesterday. Mom was in the other cell tower yelling for it to fly. Today I saw the nestling fly off the nest probably down to the river at Mom's request.
On Monday, I watched as Mom was agitated by other osprey flying near the cell phone tower nest. Dad who was in the adjacent tower took off to scare the onlookers away and then Mom left the nest! I was surprised by this- leaving her nestling alone. I waited for a bit but no return of mom. Later in the day all was well.
On May 23rd, I was able to catch my first glimpse of one rather large hatchling. Mom was busy off to the side the whole time I was there perhaps tending to another hatchling? Amazing that this first born is already pumping its wings! Beautiful!!
The hatchlings have fledged! There is no one on the nest but a lot of flight activity around the cell tower. Today when downloading old pictures from this season I see that this nest produced 3 offspring!! See new photos:)
Have observed foreign osprey harassing the active nest on multiple occasions. Mom and Dad work well to scare outsider off with sound and aggressive flight. Two hatchlings join in with the raucous alarm.
One of the chicks has fledged! It was sitting with parent in 2nd cell tower to the right of the nest cell tower in the pouring rain! Two more chicks on the nest. One is pumping like crazy trying to get airborne. With the heavy rain, it settled back down.
Saw male (clean white front) flying in circular pattern over nest site this afternoon calling as he flew. Another osprey was also flying nearby in a circular pattern. It left the area after 5 minutes. Went back at 6:00 pm and male(?) was on nest.