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.
Carol T and Mary K:
Based on the timing, and other info entered into the reports, it surely seems like there were two chicks, and they would have fledged by now.
NOTE: The osprey reported above the nest on 7/23 seems to be confirmation that the nest is empty and that osprey is either an adult or more likely, one of the fledged chicks. We estimate that they both fledged sometime between July 12-21. We will split the difference and estimate the date as July 17.
Carol T reports:
There was an adult Osprey visible standing up in the nest. It was bending over repeatedly, but I couldn’t determine if it was feeding itself or a chick.
NOTE: This possible feeding behavior supports the hatching we estimated
about May 1. We are listed 1 chick until we can confirm the number.
Carol T reports:
There was one adult Osprey sitting by the nest, and I think there was a chick visible in the nest. As Mary and I have observed, it’s really hard to make determinations at that nest because of the long distance away.
NOTE: probably hatching occurred around May 1, but we are not sure.
Mary K reports:
An adult osprey was observed flying into the nest and about 10 minutes later flying out of the nest, plus what appeared to be the top of a baby chick’s head in the nest.
NOTE: This probably is the top of the adult's head if our incubation date of 4/14 is in the ballpark.
Mary K reports:
4/14/23 and 4/16/23
On both dates, I was only able to observe what appeared to be the white top of a head in the nest.
NOTE: Based on this observation, it is probably that incubation has begun. Marking it tentatively as beginning 4/14/23
NOTE: We have been unsure on the number of chicks in this nest and previously listed just one. This latest observation makes us think there are three. We will adjust if this doens't appear to be correct.
Mary K reports:three osprey chicks, all the same size, were observed sitting in the nest, one occasionally flapping it’s wings. I could only observe the upper part of their bodies.
NOTE: I “assumed” the three osprey in Nest 7293 were all chicks because they seemed to be the same size, but I could not see the entire bodies.
Carol T reports as sub for Mary K:
Mary’s nest had the exact same activity at her nest. One Osprey bent over, tending to nest or chick(s) in nest.
NOTE: Based on the last couple observations, we assume hatching has occurred. We are listing 1 nestling until we can confirm the number. May 22 is just a guess on when hatching took place based on the observations.
Carol T reports: No activity. I have a feeling there’s incubation in process, but as we know, the nest is so deep it’s hard to discern. We need to be lucky enough to see a male coming and going to confirm.
NOTE: Based on separate observations today by Carol T and Mary K, it is possible incubation is underway. We have tentatively listed it as beginning 4/10 but can adjust as needed. Activity picked up between 4/3 and 4/10.
Carol T reports: When I arrived there was an adult Osprey standing at the side of the nest and a good sized chick sitting at the front edge of the nest. (With my binoculars I was able, just barely, to verify that it was a chick…not an adult. The wings had the speckled markings of a juvenile). I also thought at one point I might have caught a glimpse of another head, but I can’t be sure.
The chick stayed visible the whole time I was there and was even practicing “wing flapping”!
(Because the nest is such a great distance away, the photo below is not very clear and doesn’t show the detail I saw through my bins. However, if you pinch the photo out some, you can see the speckled feather detail a little bit)
Carol T reports for Mary: This nest is full of activity!
An Osprey flew out of the nest as I arrived. The mate was in the nest and appeared to be feeding a young one. I saw one small head emerging.
Several minutes later the male(?) Osprey returned, sat on the structure for a few minutes and then flew off again.
All good news that points to at least one chick in the nest!
Carol T reports: Mary Kelly’s nest had two birds visible in the nest.
One was an adult that looked like it was eating.
The other one was smaller, so I’m guessing it was a chick. It was standing up looking out of the nest. NOTE: Based on this and the previous observation, we will assume there is at least 1 chick in the nest.
This nest is so far away that I’m not able to see much in the way of detail and markings, even with my good binoculars.
Hoping for better lighting on the next visit!
Carol T reports: No activity spotted at this nest until 5/2.
An Osprey was sitting on the structure at the edge of the nest and a second Osprey was in the nest and appeared to be eating. I could see wings flapping and head bent over in an eating posture. (I’m guessing the male brought in a fish for the female who’s been incubating.)
Mary K. reports: I went to the nest today and observed activity in the nest: slight movement of the top of the osprey’s head. Upon further observation from a slightly different location, I saw the osprey fly out of the nest. He flew up from the nest and then quickly flew back down into the nest.
NOTE: Based on this report and the previous one, we are assuming that there is an egg and that incubation has begun.
Mary K reports: I viewed the nest today, which looked pretty much the same as my last visit.
I did not see any osprey activity at the nest; however I did see as many as five birds which looked like osprey flying nearby.
Linda O reports: I visited Nest #7923 today and did not see these Osprey in or near the nest. What I did see was crows all over the nest and coming and going routinely. So I would say that the young have fledged.
I thought the crows in the nest an interesting situation.
I then looked over to the nest closer to the PSD Building, I think Carol T was monitoring that one, and saw crows in that one also. I had heard osprey calling and then an Osprey came in over to the nest and chased the crows away. I then saw the 2nd Osprey flying around. The one in the nest then flew off and the pair flew around together. I was able to get some shots of them together. I am only giving this information because I have a shot of the Osprey protecting the nest after chasing the crows away. I thought it an interesting phenomenon.
So, in closing no Osprey at #7923, only crows.
Linda reports: There was only one Osprey in the Nest that I could see. Right as I got there one flew out of the nest and didn’t come back. I did catch one in flight that may be a juvenile as it seems smaller.
Linda reports: There were definitely 2 Osprey there and it looks like repairs or some shoring up to the nest was being done. I couldn’t really tell if it was the pair or an adult and a nestling. There is a small head that peaks out, but I can not tell if it is the female or a nestling.
NOTE: We have recorded it as 1 nestling.
Linda reports: I visited nest #7923 yesterday. I only observed one Osprey of the pair that is usually there, and nothing really going on. No evidence of any Chicks. As you know it is difficult to get decent pictures, but I have attached one for your review.
Linda reports: I went by Nest #7293 today around 1 PM. Both Osprey were in the nest. One around the rim ( I think the male) and one in the nest keeping low (I think the female). My hope is that she is sitting on eggs. It looked as though they were communicating or feeding although I couldn’t see any kind of food. The pictures attached are not great, but they do show the 2 in the nest. The nest is far from my vantage point so this is the best I could get even set up on a tripod. I also observed them with binoculars, but those observations are the same as the images I have attached.
Linda reports: I went by Nest #7923 this morning at about 10 am to 10:30 am. I definitely observed 2 Osprey, should be male and female. I think they are sitting on eggs, one (probably the male) venturing off for a little bit and them coming back.
Observer Linda reports:
I went by Osprey nest #7923 this morning about 9 am. There was no activity. I couldn’t tell if anyone was deep down in the nest as it is a long one. Stayed for a while and watched with binoculars, but unfortunately nothing.
This nest was only found because it was pointed out to the person monitoring another nest in this area in early July. The nest is constructed between the poles of a tower that we observed to be active. (when viewed with binocs there were osprey in the nest and one flying in with a fish).
This nest was located well behind the PSD building, beyond their two ponds. It seems to be inaccessible for someone to monitor as it is in the middle of a heavily wooded area with no apparent public access road.
Although the observer report indicates there are chicks in the nest, we are unable to provide data on the nest and are assuming at least one chick.