Nest #3248

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.

Previous Next

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

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

Photos of this nest

Nesting Diaries

07/26/2022 by CyclistBarb

I checked this tower earlier in the year and saw no osprey and no nesting material. I checked again on 7/26 after finding the start of a nest on the Knowlton Municipal Bldg tower earlier in the day! The Knowlton Municipal Building tower has also been unused for the last 4 years I have been watching so I was surprised to find a nest made only 3-4 weeks ago according to locals. This tower, however, is still completely without any sign of osprey or nesting material.

07/27/2021 by CyclistBarb

11:40 a.m. This tower has not had any sign of nesting or any osprey presence for the two years I have been observing it. Today, not only were there no nest sticks, but a hawk was perched on the tower!

07/22/2020 by CyclistBarb

I checked this tower again as I was in the area. No nesting materials on the tower, just a flock of vultures.

06/21/2020 by CyclistBarb

8:30 a.m. I saw no sign of any osprey in the area, nor any nesting material on the tower so I believe this nest site is not being used now. I will check back next time I am in the area.

	2021 - CyclistBarb	2020 - CyclistBarb
aAdult Arrival
aOccupied	No	No
aActive
bEgg Laying
bIncubation Initiation
cClutch Hatching
dNestlings
eFledglings
eFirst Chick Fledging
fChicks Last Observed
xNest Failure
xReason For Nest Failure