This new nest is approximately 100 yards south of Nest 1067 which was active this season, then abandoned. The new site was being used by the 1067 pair as a perch/feeding tree before 1067 was abandoned, so I suspect that for some unknown reason they left the one nest and started this new one. (See Diary for more.)
What to look for
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.
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.
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.
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
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.
Look for signs of nest failure like adult abandonment, adults no longer incubating eggs or feeding young.
6/29/17 One adult below nest on a limb. I cannot see into the nest, but it appears there is movement in the nest, so I suspect there is egg turning or chicks present.
7/11/17 One adult perched above nest, one adult in nest moving around.
7/19/17 Two adults at nest, one peeched outside, one in nest feeding, but cannot see how many chicks.
06/27/14 One adult perched below nest, one i nest. One hour later both perched below nest.
07/15/14 98 F, no birds seen at nest.
07/3/14 One adult on nest, one arrive with fish. No young visible, but bad angle to see.
07/29/14 Two young on edge of nest flexing wings.
07/31/14 Empty nest.
07/02/13 One adult in nest using wings to shade two young. Temp 101 degrees.
A friend sent me a photo of one nestling that is hanging caught up in nest twigs out side the nest. No idea of how it died or when.
04/03/13 No activity.
04/11/13 No activity
04/18/13 1200 hours, one in nest, one perched in same tree above nest, and another, third bird tried to dislodge the4 perched bird but failed, so flew off.
04/25/13 One in the nest, one perched by the nest.
05/02/13 One sitting high in the nest, one perched about 50 yards away in smaller tree.
08/03/12 One adult peerched above nest, one low in nest. 08/08/12 This pair apparently has moved from this new location back to the old nest #1067. From our studies in Idasho in the late 1970s, I suggest they are playing house and are not the same pair that produced 4 fledglings last year at #1067.
07/18/12 Two adults were bringing nesting materials to the site. One with sticks, the other with mosses. Then, both stayed away for a long time. I returned later after observing #1068, but still none were in the area.
07/16/12 I have reported Nest 1067 as being abandoned, even though last year a pair produced four young from this site. On 07/11/12 I revisited the site to find the nest still abandoned, but a new nest about 100 yards away in a tree that the birds from 1067 would use as a perch tree. This tree now has a small nest, with two active adults in and around the nest. At one point they copulated on the nest. I have observed a pair copulating on nest 1067 on 04/19/12, and in incubating posture after that until abandoned for unknown reasons. Last year, the young didn't fledge until into September, so I am wondering if this may be the same pair double clutching this year, which they may have done last year also, accouinting for th late fledging date.