Pair are attempting to build a nest on the bars of a boat lift. Is only about 500 feet from another nest. Doubt it will be successful. In May 2013 boat owner built an osprey platform nearby. By end June, no nesting or egg laying observed. The same has been observed in 2015 and 2016. Platform is ignored and both ends of a boat lift bar are used to attempt a nest. In 2016 a large nest resides at one end of the bar, but no egg laying or brooding has been observed. In 2015 a chick was hatched, amazingly, but it disappeared in a couple of weeks, probably falling into the water.
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.
Again this year this pair built a nest on the boatlift, ignoring the platform nearby. But this year the nest is much larger and may be adequate to permit survival of a chick At present they are brooding.
Nest reported disrupted a week ago (see last report) -- HOWEVER parents remained active at nest and today we discovered there is a chick in the nest! This nest is minimally sufficient and located precariously on a boat lift bar.
This nest failed last year for trying to build a nest on a narrow boat-lift beam. Someone built a platform and this year (2014) upon arrival, the pair began to build on it. A storm blew it off however, and they again have built a nest, probably successfully on the narrow boat lift beam. In the photo can be seen the nest and the abandoned platform.