Nickname
044-A-001 (Warren Glen)
Coordinates
(40.63, -75.1413)
Substrate
Transmission Tower
Description
Warren Glen-Musconetcong. Tower is right along the main road, route 627, Riegelsville-Warren Glen Rd in the town of Warren Glen.
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 - CyclistBarb | 2022 - CyclistBarb | 2021 - CyclistBarb | 2020 - CyclistBarb | |
|---|---|---|---|---|
| aAdult Arrival | ||||
| aOccupied | Yes | Yes | Yes | Yes |
| aActive | ||||
| bEgg Laying | ||||
| bIncubation Initiation | ||||
| cClutch Hatching | ||||
| dNestlings | 2 | 1 | 3 | |
| eFledglings | 2 | 3 | ||
| eFirst Chick Fledging | 8/1/20 | |||
| fChicks Last Observed | ||||
| xNest Failure | ||||
| xReason For Nest Failure |
Select Seasons
Show reports, diaries, and photos from:Current 2022 2021 2020
Activity reports
2020 Nest Activity Report by CyclistBarb
| Adult arrival | Nestlings | 3 | |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | 3 |
| Nest Active | First chick fledging | 08/01/2020 | |
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
2021 Nest Activity Report by CyclistBarb
| Adult arrival | Nestlings | 1 | |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
2022 Nest Activity Report by CyclistBarb
| Adult arrival | Nestlings | 2 | |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | 2 |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
Nest Activity Report by CyclistBarb
| 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 |
Photos of this nest
Nesting Diaries
05/05/2023 by CyclistBarb
12:50 p.m. There was a white object in the nest, but it did not move at all so I expect is was not a bird. I did not see either male nor female near the nest.
08/02/2022 by CyclistBarb
9:05 a.m. No one was home when I passed by. I did not stay long, but saw no sign of the fledglings or parents at the nest/tower.
07/25/2022 by CyclistBarb
9:40 a.m. The adult female was on a post and one of the two fledglings was self feeding in the nest. I did not see the other fledgling nor the adult male.
07/22/2022 by CyclistBarb
10:55 a.m. One chick was "branching" on the structure and calling persistently. It then flew off, circled around the tower, and landed back on the nest. It continued with its persistent calling. It is no surprise that these two have fledged. The other chick has also fledged and was off somewhere. I never saw it while I was in the area. I also never saw either adult.
07/12/2022 by CyclistBarb
2:10 p.m. Mom and two chicks which were almost as big as she is sat up tall on the nest as I parked and set up my equipment. Not long after that, Dad flew in with a nice fish! He didn't stay long. He needs to catch a lot of fish to keep his two big chicks and his mate fed! The chicks were self feeding and Mom had a bite or two as well. It won't be long until these two chicks fledge!
06/29/2022 by CyclistBarb
12:00 p.m. Mom was sitting up on the nest but the chicks remained down the entire time. I did not see the male either. I did see an occasional wing stretch, but didn't see either chick's face.
06/21/2022 by CyclistBarb
12:08 p.m. The female was sitting on the edge of the nest. I saw one chick to the left of the mother. Then I saw a second nestling to the right. It did a big wing stretch. I then noticed Dad when he stretched his wings. He was perched on a post on the north side of the tower and I could see him through the structure. I moved north and could see Dad clearly on a post on that side of the tower.
06/17/2022 by CyclistBarb
4:04 p.m. The female was sitting up tall on the edge. I saw at least one nestling down low in front of its mother. Later I saw the back and a wing stretch of another of the nestlings.
06/06/2022 by CyclistBarb
1:35 p.m. The female was sitting high on the nest. I saw one chick (top of its head moving around).
05/11/2022 by CyclistBarb
10:30 a.m. I could barely see the top of the adult's head, but it stood once and appeared to roll egg(s). I did not see the mate.
04/23/2022 by CyclistBarb
1:25 p.m. After parking in the driveway/grass beside the house and red barn on the northbound side of the road, I could see one flying around, over the road, over the nest area. I couldn't get a good view of it. It eventually landed on the nest and appeared to be the female with the brown on her breast. She moved sticks all around the nest and sat, but I never saw her mate.
04/04/2022 by CyclistBarb
1:51 p.m. When I parked in the usual spot I could see one adult sitting in the nest. I did not see the mate.
07/30/2021 by CyclistBarb
11:50 a.m. When I arrived and parked on the grass just north of Jeremiah's barn/garage (as per his permission), I could see one bird on the nest. I caught a glimpse of a very red eye so although his plumage was mostly hidden (he was sitting low with head up), I knew it was a chick. I watched for a half hour, but nothing changed. The chick did not move and no parents appeared. I am not completely sure about the number of chicks in this nest. It would appear to be a single chick, but I have yet to see a real feeding with a lot of movement and action. It is a difficult nest to see. It is impossible to see the center of the nest from any viewing spot I have found to date.
07/23/2021 by CyclistBarb
11:10 One parent, the female, was perched on one of the posts. I saw one chick on the nest. As I watched from right under the tower the male came in with a nice fish. There were lots of loud, enthusiastic vocals that sounded like more than one chick, but it could have also been the female calling. I moved back to the grassy spot beside the barn to the south of the tower where Jeremiah said I could park. The chick appeared to be self feeding. I can still only confirm one chick. There were two in the nest after the deliver, but one could have been the female.
07/04/2021 by CyclistBarb
1:15 p.m. I was parked at the barn when the owner, Jeremiah said I could park on the grass as it was safer, so I moved. I saw one adult, the female, to the right. After watching awhile, one chick stuck its head up. I could not see more than one.
08/15/2020 by CyclistBarb
When we ride by on our bicycles at around 10 a.m., I look but the nest appears empty. I don't see any of the osprey family this morning, but don't stay long.
08/12/2020 by CyclistBarb
11:30 a.m. I am in the area so I check this nest. It is empty. No surprise since I have seen it with only one chick and suspect the first fledge was about two weeks ago.
08/05/2020 by CyclistBarb
1:25-1:30 p.m. I am doing very quick checks of as many nests as I can after yesterday's tropical storm Isaias. The severely high winds took down many trees and could have blown nests and chicks down. I see only one on the nest. I expected the chicks to fledge very soon after my last visit almost two weeks ago. The nest is intact so I expect and estimate, that the other two (and perhaps even this one I see today) have fledged. I will estimate first fledge as Aug. 1.
07/24/2020 by CyclistBarb
12:30 p.m. The adult is perched on the nest and I can see two chicks, but I believe the third is hidden by the two other chicks. These three are soon to fledge.
07/19/2020 by CyclistBarb
3:35-4:00 p.m. After setting up my scope and camera I can see two chicks, but I can clearly hear the third. The third is blocked by its two siblings. A video that I took clearly shows all three so I know they are all healthy, and close to fledging. I see all the normal activities: wing flapping, self feeding (or at least picking the bottom of the nest for scraps), and preening. All this to the tune of persistent chick vocals calling for more fish deliveries!
06/30/2020 by CyclistBarb
2:00 p.m. This nest is difficult to observe. All of the places to safely pull off the road, which are far enough away to see into this high tower, are on private property. I managed to pull into a driveway for a garage-type building that seemed empty. Two adults were on the nest and the female was feeding. At first I saw two chicks but then a third appeared! I took a video that clearly shows this. This feeding was taking place after about an hour of rain showers. The male flew off the nest and away. After the feeding was over, the female perched on a strut above the nest and preened. In the photo, the third chick is lower, slightly behind, and to the right of its 2 siblings.
06/16/2020 by CyclistBarb
One adult was perched on a post close to the nest. I could not see if the mate was in the nest. I will keep an eye on this nest to see if I can determine whether or not there is a pair with eggs and if so if they are producing chicks.