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.
Juveniles have fledged. Nothing in nest. Several juveniles in nearby trees, vocalizing, and flying around. Though channel marker nest is nearby, these were most likely associated with the communication tower nest. See photo, captured today, of young Osprey in flight (3/8).
There are TWO chicks in the nest! The adult female was on the rim and the adult male was nearby on the tower. Oddly enough, there's a crow's nest just above the Osprey nest. Go figure. The dead adult Bald Eagle is no longer in the place that it was. Either removed by human hands or by a vulture perhaps?
Visited briefly. I took some photos. I examined photos more closely this am (6/23) and discovered a chick in the nest! That stands to reason as the female was on the rim. The chick is to her right. Unfortunately I also discovered what appears to be an electrocuted adult Bald Eagle nearby and to the left of the nest. Please see photo.
I'd just finished observing Nest #5335 when I saw several crows harassing an Osprey near the nearby the tower, (and observed the Osprey harassing the crows right back). Then to my surprise I discovered this nest lodged in the tower. I had no idea a nest was there. Boy, is it big! It's interesting that it's so close to the other nest. Both nest are maybe 1/10 mi. apart. There are two Ospreys on the nest and I'm willing to bet there are hatchlings on the nest as well.