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.
Nest is looking pretty shabby this year, Looks smaller then last year. hasn't changed much since they arrived on march 15 th. they are catching fish and eating on other light posts. we did see a mating attempt the day they arrived.
The nest is thriving, I feel we have three chicks and two adults. the chicks are now flying from light post to light post back to the nest. Lots of crying for food. Yesterday one of the young made it to the trees and watched dad fish in the pond.
5/4 All appears to be calm. Female is incubating, but can't tell how many eggs. Good food supply seems to be a good factor. Complex is very active with hundreds of kids playing soccer, but it doesn't seem to bother this multi year pair.