This nest was found a little past the Center Loop of the main trail in Boyd Hill Nature Preserve (past the pond and armadillo statue on the left and a fire hydrant on the right). Nest is very high up in a dead tree on the left across from lake; can be seen easily from trail.
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.
Great horned owl still living in nest. There is a newly constructed osprey nest a bit further down the trail, possibly from the original inhabitants, but no activity was seen. I'll be checking on it this week.
Nest rebuilt, extremely well established (first seen 1/16). : Pair of osprey perched near the nest. The male was perched directly above the nest on an outlaying branch and the female was in an adjacent tree eating. The male later flew off, circled, and came back to the perch.
No ospreys at nest, but a lot of bald eagle and hawk activity around nest. Ospreys are present through out the park just not near the nest. Wondering if they are going to try and nest somewhere else since the eagles are hanging around the back side of the park where this nest is
Around 2:30 today, there was a male sitting in the nest as we approached it from below. The female partner flew in, switched spots, and the male flew out. They did not sit in the nest together for very long this time, as I think they were trying to be careful and protect what was in the nest. The male flew to another tree nearby and started preening for a bit. The female remained in the nest for awhile and was calling too.
There was a lot of activity at this nest today around 2:15pm. There was a female perching above the nest/higher in the tree, and she was calling to a male. The male osprey was perched in a tree across the trail on the right side, and flew over to the nest where she was perching. There was a great deal of movement between them, in addition to sounds, before the male flew away again. There were 2 other ospreys flying above/circling the pond near the nest as well. We also heard little chirps following the female's call, but it was hard to fully distinguish if they were coming from the nest she was at because we couldn't see any visible movement in the nest itself.
Today around 12:15pm I noticed Wanda (I named the female) perched on a branch next to the nest and Cosmo (male) perched on a tree next to the nest. Wanda called out at Cosmo a few times while I was observing them. I could not discern whether Wanda was taking a break from incubation or she had given up on her eggs.
Today we found the female low in the nest, hopefully a sign that she really is incubating. We also watched the male fly down to the nest and snuggle up next to the female. He did not appear to be carrying any food but it was still exciting to see him land in the nest.
Today we found this Osprey nest occupied by a male and a female. The male was perched on the branches above the nest and the female sat low in the nest, possibly incubating, but flew away when we approached her.