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.
Karen R reports: Just took a drive to the Island and YEP the nest is much larger than last year .. previously it was just a bunch of random sticks and now it has more shape and more sticks etc in a nest shape.... still quite small compared to what it was years ago but it's promising. I did notice two osprey flying over /around the cross island expressway as i was leaving... so technically nest #2549 has promise based on my observation today and the other observation.
Karen R reports: drove by 3 times in past week ... unfortunately no activity. Note: another person went by this nest and didn't see anything either.
This nest may be inactive this year since there has been no activity for about 6 weeks.
Mary Ellen H was able to get a quick photo with an osprey in the nest. This nest is very difficult to monitor since you simply need to slow up on a busy highway to see it. We have many eyes on the nest because if this!
Karen R reports no activity;
Additional note: Since this nest is on a crossbar over a busy highway with no place to stop and observe, it is very difficult to monitor the progress. A few days ago another person reported seeing an osprey in the vicinity of the nest.
This is a very hard nest to monitor since it is on the crossbar on a busy road with no place to stop and observe. While there were 2 confirmed nestlings, we can not verify that they fledged. They probably did, but because we cannot be sure, we will not record any fledglings.
Karen R reports:Today I noticed one adult and I’m quite sure two little heads in the nest.
NOTE: We added 2 nestlings to the nest report, which means our incubation date is off. This nest is hard to monitor because you can only check it while driving....there is no place to stop to view this nest on the crossbar on this busy road.
Karen R reports: ... spotted both adults ... one in nest (probably female) and other flying towards the nest about 20 feet away ... so Sonny and Rosie appear to be doing well ... did not see any bobbing heads in nest but as you know it’s a difficult angle from the road.
Karen R reports: spotted a “rather white” adult sitting down in nest ... no other activity. Hoping for chicks soon!
NOTE: Based on this report, we are assuming that incubation has started in the past 10 days. we will simply guess the 19th.
Karen R reports: saw ONE adult osprey in Nest # 2549 today. Since I noticed another observer had names for their osprey - how about "Sonny" and "Rosie" for #2549? Nest looked a wee bit better but still work to do.
Note; Based on observations by Karen R and the report of another person, we assume that the young have successfully fledged sometime between 6/11 and 6/28. We will go with 6/26 as our best guess since that is about 8 weeks after we believe they hatched.
Another observer reported that she saw three heads in the nest on June 4th. It was either two young and an adult or three young. While we recorded two nestlings, we will update it when we can determine if there are really 3 young.
NOTE: Based on Karen's observations, we are guessing that eggs were laid by March 21 when Mom was "hunkered down"in the nest. Then, beginning around April 26, one osprey has been standing in the nest. This nest if very high and deep so we are still not able to see any little ones, but the above dates seem to be our best guesses on the timing.
another observer, Jeff M, reported: Just a quick helpful side note on nest #2549 - with no perch at the expressway hard to prove both Ospreys are there as you zip down the expressway. Well yesterday BOTH Ospreys were perched on the nest.
The two osprey were also seen on the nest previously by Carol C.
observer reports: Both chicks were together in the nest and definitely smaller than the two adults but still much larger than I thought. NOTE: Because of the height and depth of this nest on the highway crossbar, it is nearly impossible to tell when an osprey is incubating eggs or when the chicks hatch.