Nickname
158-B-041
Coordinates
(39.3767, -74.4423)
Substrate
Osprey Nest Platform
Description
ACUA - Penrose Canal East.
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
| 2018 - Ollie | 2017 - Ollie | 2016 - Ollie | 2015 - Ollie | 2014 - Ben Wurst | 2014 - Ollie | 2013 - Ben Wurst | |
|---|---|---|---|---|---|---|---|
| aAdult Arrival | 4/10/18 | 5/1/17 | 5/2/16 | 4/14/15 | |||
| aOccupied | Yes | Yes | Yes | Yes | Yes | Yes | No |
| aActive | |||||||
| bEgg Laying | |||||||
| bIncubation Initiation | 5/11/15 | ||||||
| cClutch Hatching | |||||||
| dNestlings | 2 | 1 | |||||
| eFledglings | 2 | ||||||
| eFirst Chick Fledging | |||||||
| fChicks Last Observed | |||||||
| xNest Failure | |||||||
| xReason For Nest Failure |
Select Seasons
Show reports, diaries, and photos from:Current 2019 2018 2017 2016 2015 2014 2013
Activity reports
2013 Nest Activity Report by Ben Wurst
| Adult arrival | Nestlings | ||
|---|---|---|---|
| Nest Occupied | No | Fledglings | 2 |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
2014 Nest Activity Report by Ollie
| 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 |
2014 Nest Activity Report by Ben Wurst
| Adult arrival | Nestlings | 2 | |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | Nest failure | ||
| Clutch hatching | Reason for nest failure |
2015 Nest Activity Report by Ollie
| Adult arrival | 04/14/2015 | Nestlings | |
|---|---|---|---|
| Nest Occupied | Yes | Fledglings | |
| Nest Active | First chick fledging | ||
| Egg laying | Chicks last observed | ||
| Incubation initiation | 05/11/2015 | Nest failure | |
| Clutch hatching | Reason for nest failure |
2016 Nest Activity Report by Ollie
| Adult arrival | 05/02/2016 | 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 |
2017 Nest Activity Report by Ollie
| Adult arrival | 05/01/2017 | 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 |
2018 Nest Activity Report by Ollie
| Adult arrival | 04/10/2018 | 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
04/11/2019 by Ollie
2 birds on the platform the morning of 4/10, but only one that afternoon and again one 4/11 morning. Matches last year's adult arrival.
07/02/2018 by Ollie
Got a better view yesterday and confirmed at least 2 chicks. Both are pretty good size.
06/21/2018 by Ollie
While mama bird is still blocking most of mt view, I was able to see at least 1 chick in the nest. Hoping to find a different spot to observe the nest.
06/12/2018 by Ollie
Observed the female osprey standing on the side of the nest. She is in my direct line of sight blocking any chance of seeing if there's a chick or two.
05/14/2018 by Ollie
For the past month I have only observed the female sitting down in the nest. Today was the first time I've seen both birds at the nest stand.
04/04/2018 by Ollie
One osprey (the male I believe) sitting on the nest platform waiting for his mate.
10/24/2017 by Ben Wurst
Must have a new nesting pair here since it was productive in the past. Will record as active and housekeeping (no young).
05/01/2017 by Ollie
For nearly a month, I have only seen the 1 osprey (presumably the female) at this platform. Today I finally saw a second bird and may have actually witnessed them copulating.
04/05/2017 by Ollie
I had witnessed a bird at this platform on the morning of 3/17, but did not see it that afternoon or the next day. Again, a bird at the platform on 3/28 but gone again. On 4/3, I started to see a bird each morning and afternoon, but no mate yet.
05/10/2016 by Ollie
Both birds seemed to be hunkered down in the nest. Probably just trying to stay warm.
05/14/2015 by Ollie
I have observed the female(I assume) sitting down in the nest for the last 4 days. Occasionally, a second bird is present.
04/27/2015 by Ollie
Since seeing 2 birds at this nest on 4/14, I've yet to see more than 1 since, and frequently none at all.
04/14/2015 by Ollie
Finally !! Observed 2 adults on the platform this afternoon. I had seen a single bird on 3/30 and again the next morning of 3/31, then nothing since.
10/15/2014 by Ben Wurst
Thanks for the report, Ollie! There were actually two young produced at this nest this year.
07/09/2014 by Ollie
Finally !!! I was beginning to wonder if this nest was a failure. The past week I've noticed both adult birds at the nest with the female standing on the side of the nest, but no sign of chicks. Today I was able to see one chick. There may be more, but tough to see from where I can observe this nest.