Nickname
Minto Island River Side Nest
Coordinates
(44.9298, -123.096)
Substrate
Osprey Nest Platform
Description
This nesting site is located right off of the river at the end of the trail in Minto that runs along the river. If you walk from the parking lot down to the river trail and then follow the river South-West all the way (staying right) you will end up on a gravel loop that takes you directly under the nesting site. This pair has been in this location for around 14 years.
What to look for
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.
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.
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.
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 fly
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.
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.
Nest Failure
Look for signs of nest failure like adult abandonment, adults no longer incubating eggs or feeding young.
Review All Observations
| 2016 - gdeyeh | 2015 - Michaela | 2015 - gdeyeh |
|---|
| aAdult Arrival | 4/2/16 | | 4/15/15 |
|---|
| aOccupied | Yes | No | Yes |
|---|
| aActive | | | |
|---|
| bEgg Laying | | | |
|---|
| bIncubation Initiation | | | 5/6/15 |
|---|
| cClutch Hatching | | | 6/12/15 |
|---|
| dNestlings | | | 3 |
|---|
| eFledglings | | | 3 |
|---|
| eFirst Chick Fledging | | | 7/29/15 |
|---|
| fChicks Last Observed | | | |
|---|
| xNest Failure | | | |
|---|
| xReason For Nest Failure | | | |
|---|
Select Seasons
Show reports, diaries, and photos from:Current 2022 2016 2015
Activity reports
2015 Nest Activity Report by
Michaela| Adult arrival | | Nestlings | |
|---|
| Nest Occupied | No | 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
gdeyeh| Adult arrival | 04/15/2015 | Nestlings | 3 |
|---|
| Nest Occupied | Yes | Fledglings | 3 |
|---|
| Nest Active | | First chick fledging | 07/29/2015 |
|---|
| Egg laying | | Chicks last observed | |
|---|
| Incubation initiation | 05/06/2015 | Nest failure | |
|---|
| Clutch hatching | 06/12/2015 | Reason for nest failure | |
|---|
2016 Nest Activity Report by
gdeyeh| Adult arrival | 04/02/2016 | 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 | |
|---|
