Nickname
Stonebridge Nest
Coordinates
(41.7426, -70.653)
Substrate
Osprey Nest Platform
Description
At the corner of Onset Ave and South Water st.
Followers
None
Monitoring groups
What to look for
a
Adult Arrival
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.b
Incubation Initiation
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.c
Clutch Hatching
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.d
Nestling Count
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 flye
Fledgling Count
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.f
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.x
Nest Failure
Look for signs of nest failure like adult abandonment, adults no longer incubating eggs or feeding young.Review All Observations
| 2023 - jzskins | 2023 - ospreychick | 2022 - SMF | 2022 - ospreychick | 2021 - jzskins | 2021 - ospreychick | 2020 - SMF | |
|---|---|---|---|---|---|---|---|
| aAdult Arrival | 3/31/23 | 3/26/22 | 3/29/21 | 3/25/20 | |||
| aOccupied | Yes | Yes | No | Yes | Yes | No | Yes |
| aActive | |||||||
| bEgg Laying | 4/21/23 | 4/22/22 | 4/11/20 | ||||
| bIncubation Initiation | 4/21/23 | 4/22/22 | 4/21/21 | 4/12/20 | |||
| cClutch Hatching | 5/30/23 | 6/1/22 | 5/26/20 | ||||
| dNestlings | 3 | 2 | 2 | ||||
| eFledglings | 3 | 2 | |||||
| eFirst Chick Fledging | 7/18/23 | 8/3/22 | 7/9/20 | ||||
| fChicks Last Observed | 9/10/23 | ||||||
| xNest Failure | |||||||
| xReason For Nest Failure |
Select Seasons
Show reports, diaries, and photos from:Current 2023 2022 2021 2020
Activity reports
2020 Nest Activity Report by SMF
| Adult arrival | 03/25/2020 | Nestlings | 2 |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | 2 |
| Nest Active | First chick fledging | 07/09/2020 | |
| Egg laying | 04/11/2020 | Chicks last observed | |
| Incubation initiation | 04/12/2020 | Nest failure | |
| Clutch hatching | 05/26/2020 | Reason for nest failure |
2021 Nest Activity Report by jzskins
| Adult arrival | 03/29/2021 | Nestlings | |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
2021 Nest Activity Report by ospreychick
| Adult arrival | Nestlings | ||
|---|---|---|---|
| Nest Occupied | No | Fledglings | |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | 04/21/2021 | Nest failure | |
| Clutch hatching | Reason for nest failure |
2022 Nest Activity Report by ospreychick
| Adult arrival | 03/26/2022 | Nestlings | |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | |
| Nest Active | First chick fledging | ||
| Egg laying | 04/22/2022 | Chicks last observed | |
| Incubation initiation | 04/22/2022 | Nest failure | |
| Clutch hatching | 06/01/2022 | Reason for nest failure |
2022 Nest Activity Report by SMF
| Adult arrival | Nestlings | 2 | |
|---|---|---|---|
| Nest Occupied | No | Fledglings | |
| Nest Active | First chick fledging | 08/03/2022 | |
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
2023 Nest Activity Report by jzskins
| Adult arrival | Nestlings | ||
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
2023 Nest Activity Report by ospreychick
| Adult arrival | 03/31/2023 | Nestlings | 3 |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | 3 |
| Nest Active | First chick fledging | 07/18/2023 | |
| Egg laying | 04/21/2023 | Chicks last observed | 09/10/2023 |
| Incubation initiation | 04/21/2023 | Nest failure | |
| Clutch hatching | 05/30/2023 | Reason for nest failure |
Photos of this nest
Nesting Diaries
04/04/2023 by ospreychick
4/4/23 - observed female on nest chirping at another bird flying by. Saw this behavior twice today. Her mate definitely returned and I've seen them both in the nest.
03/29/2023 by Mr. Onset
3/29/2023 10:30 AM - spotted one Osprey above and near the nest calling. I'll be looking for a pair and be more ready with my cell phone.
08/17/2022 by ospreychick
Biking and driving past the nest recently I've only seen one or 2 birds around. Adults are most likely gone.
08/16/2022 by SMF
The date of pledging is an estimate. I was away on vacation. Hadn't fledged before, but had after i got back.
07/26/2022 by SMF
While watching adult landed and 2 chicks were seen. A second adult landed carrying a fish. The 2 chicks bent over spent the next 15 minutes eating. They then settled down in the nest. The chicks are almost as big as the adults. Have seen some wing flapping, but no serious practice yet.
07/26/2022 by ospreychick
Looks like there are still 3 chicks in the nest, still flapping. I don't think they've fledged yet.
07/13/2022 by ospreychick
Observed the nest from my kayak and saw 4 birds in the nest! Probably 3 chicks and Mama.
06/01/2022 by ospreychick
Drove by the nest today and the female was definitely out of the incubating position. I think we have a hatch!
05/30/2022 by SMF
Haven't seen any activity in the past week or so. (Was away from May 14 to 21. So no observations.) Previously, had seen adult on the nest, presumably sitting on eggs.
06/25/2021 by ospreychick
No adults in nest but I clearly saw 2 chicks. One stretched out his wing. As I watched, an adult came back and settled on the nest.
04/07/2021 by Mr. Onset
One adult arrived 3/29/2021 but it took until 4/7/2021 before I could confirm two osprey occupying the nest at the same time (see image)
07/10/2020 by ospreychick
Floated by in my kayak and saw both chicks stretching their wings in the nest. Mom was sitting on the capped utility pole next to the nest, seemingly coaching them. From reading SMF's entry from the day before, I guess one of them had already flown. Yay!
07/09/2020 by SMF
Saw one of the chicks take a test flight. Started by spreading wings in the wind. Then flapped and rose about 2 feet above the nest. Only stayed for about a minute before settling back down.
06/20/2020 by SMF
Just happened to be watching the nest at about 5 pm when one of the adults (I think the male) came back with a fish. The other adult was nestled down in the nest and rose up when supper arrived.
06/07/2020 by SMF
Most days this week a chick's head was observed poking above the rim of the nest. Have only seen one chick at a time. So still don't know how many chicks have hatched.
06/01/2020 by SMF
First observation of chick in nest. Because of viewing angle, it's hard to see activity in the nest. Did see a chick's head pop up a few times.
05/25/2020 by ospreychick
On 5/23 I observed both birds in nest, not in incubating posture. Same thing on Sunday, 5/24. It seems that the chicks might have hatched.
05/06/2020 by ospreychick
I witnessed the changing of the guard this morning. One bird flew into nest, the one who had been incubating flew out and the other bird settled on the eggs.
04/19/2020 by Mr. Onset
At least 4 small birds are using the platform into which to build their own nests.
03/28/2020 by ospreychick
I ran across the stone bridge towards the nest at about 7:30 this morning. Both birds were in the nest and watched me run by. Looked like a few new sticks had been added.
03/27/2020 by Mr. Onset
Three osprey in area. The one in the nest had a fish. The other two circling and flying fast. Images taken 3/27/2020 at 1?12 PM.