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.
Female osprey low in the nest, head not visible but her body was. She would pop her head up and down every minute or so and then duck down again. There have been nestlings observed in this nest previously but they were not seen during this observation period. The nest and the osprey were very still.
Overcast and rainy day. Upon arrival no ospreys present. After ten minutes a male or female seen landing in nest. After landing the osprey began tending to and feeding the nestling. Though two nestlings were seen last week this week only one nestling head was visible.
When I first approached the nest, the male was keeping guard on a near by light post while the female was in the nest. As we go closer the male flew back into the nest with the female. The male attempted to mount the female. This could be a new pair of ospreys. A gym bag strap could be seen dangling from the nest along with the black sheets you lay down in a garden bed to prevent weeds from growing.
When I arrived there was a female in the nest. About a minute later the male osprey arrived with a twig to build up the nest. The male then left and perched on a nearby light pole, possibly because he thought I was an intruder. The female osprey was then seen pecking down as if she were feeding hatchlings. Although I didn't personally see the baby birds, I thought I could hear soft chirps. If this nest doesn't have hatchlings, the mother is atleast incubating
The female Osprey was sitting in the middle of its nest when I first arrived on the scene. About five minutes later a male Osprey flew into the nest. The two sat side by side for a few minutes. The male Osprey then left while the female stayed.