Nest #9283

Nickname

Eugene Owosso

Coordinates

(44.0941, -123.115)

Substrate

Osprey Nest Platform

Description

Platform atop utility pole immediately next to bicycle path between Willamette River and wastewater treatment plant. A long-time resident claims this is the first time the platform has been used in about a decade. Date of 2023 occupation is unknown.

Followers

None

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.

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Activity reports

	2023 - SixEyes
aAdult Arrival
aOccupied
aActive
bEgg Laying
bIncubation Initiation
cClutch Hatching
dNestlings	1
eFledglings
eFirst Chick Fledging
fChicks Last Observed
xNest Failure
xReason For Nest Failure

Adult arrival	Nestlings	1
Nest Occupied	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

07/31/2023 by SixEyes

Spotted nestling moving its wings a little again today. Dad dropped off a meal (presumably a fish) today. Mom promptly dug in, and fed the offspring too. Dad has definitely found another source for fish. It does not appear there are enough fish in the Willamette River to support a family of three Osprey. Where he is going to find fish is unknown, but he apparently is flying quite a ways with the catch to support the family. Kudos to Dad! Many humans have attempted to fish the Willamette in this area too. I have not seen anyone walk away with fish. Furthermore, the water is clear and shallow enough to see the bottom from the Owosso bridge. I have not seen a fish the entire Summer.

07/30/2023 by SixEyes

Female has been consistently guarding the nest while the male hunts. While the male was seen hunting close by in the immediate vicinity (Willamette River) earlier on, he seems to be traveling further away to find fish. This observation cannot be confirmed with certainty, since monitoring is not constant. Nestling does not make frequent appearances. However, this morning it actually exercised its wings a bit. It appears to be 65-70 percent as large as mom.