Nest #4815

Nickname: Andrews Forest Ospreycam
Nest substrate: Live Tree
Nest Location Description: This Osprey nest at the H.J. Andrews Experimental Forest has been occupied every season for the last six years. The pair typically arrives in April and remains until October. The nest is located on the broken top of an old-growth Douglas fir tree, about 180 ft above Lookout Creek. The Ospreycam is deployed 200 ft up in an adjacent tree, powered by solar panels and linked to Andrews Forest Headquarters by a series of radios.
Nest Cam URL: Click to Visit
Monitoring Groups:
Latitude: 44.2216006059825
Longitude: -122.243573387915
Followers: None

Past Seasons

Show reports, diaries, and photos from:Current 2016 2015 2014

Activity reports

2014 Nest Activity Report by Andrews Forest
Adult arrival 04/03/2014 Nestlings 3
Nest Occupied Yes Fledglings 0
Nest Active Yes First chick fledging
Egg laying 04/27/2014 Chicks last observed 07/22/2014
Incubation initiation 04/27/2014 Nest failure 07/23/2014
Clutch hatching 06/06/2014 Reason for nest failure unknown reason
2015 Nest Activity Report by amygdule
Adult arrival Nestlings
Nest Occupied Yes Fledglings
Nest Active Yes First chick fledging
Egg laying 06/01/2015 Chicks last observed
Incubation initiation Nest failure
Clutch hatching Reason for nest failure
2015 Nest Activity Report by Andrews Forest
Adult arrival 04/10/2015 Nestlings
Nest Occupied Yes Fledglings
Nest Active Yes First chick fledging
Egg laying 05/06/2015 Chicks last observed
Incubation initiation Nest failure 05/07/2015
Clutch hatching Reason for nest failure Nest attacked by a third adult repeatedly over the course of 40 minutes. During comotion the egg appeared to be smashed, possibly by one of the nesting adults
2016 Nest Activity Report by Andrews Forest
Adult arrival 04/03/2016 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

Photos of this nest

Nesting Diaries

04/20/2016 by Andrews Forest
Odd start to the nesting season. The pair arrived at the nest on 04/03, which is the same timing as in the past two years. Since then, the nesting activity has been desultory at best. In previous years serious nest-building began by 04/10 -12. This year a couple of new sticks have been brought in and a there has been some minor rearranging of sticks on the nest, but nest building still hasn't started. This is particularly odd given that the nest lost at least half of its material over the last winter. There have been a few attempts at copulation by the male, but not frequent or successful as far as we can tell. The nest had no visits from either bird on 04/04, 04/10, 04/13, 04/15, 04/16 and 04/18. On the other days there has been at least one visit by one of the adults during the day, but generally no more than two in a day. On 04/03 there was a brief interaction between two males on the nest - a male arrived and then was immediately chased off by a second male who stayed on the nest calling (presumably the male seen earlier in the day with the female). On 04/06 there was some indication that the adults were defending the nest, although the camera did not catch a third bird in the frame (some shadows from a bird flying above the nest). But other than that no evidence of territorial interactions that are delaying the nesting season. The pair doesn't seem to have abandoned the nest yet - the female brought on one stick on 04/17, and then male came in and messed around with a stick on the nest on 04/19.

06/14/2015 by Andrews Forest
11:20:23 - the female is incubating. Next screen grab at 11:20:31 female has wings splayed and is looking down in direction of egg, or egg remains. From this point on, no more brooding activity and nest is left unattended for long periods. At 10:07 there was a nest visit from an adult that was not a member of the nesting pair. Nothing seemed to happen on that visit, as the female went back to brooding. Our best guess is that in the nine-second gap in our timelapse the third adult returned and in the ensuing encounter the egg was destroyed. In the first image after the gap the female appears to be in a defensive posture with wings splayed. During the rest of the day the nest was left unattended for long periods, so even if the egg was not smashed at 11:20, it can't be viable.

06/14/2015 by JG
The egg has vanished. It was seen on the 06/12/2015 time lapse video but was gone the next day.

06/08/2015 by JG
Still only one egg in the nest. The parent is trying to shade it as much as possible since the temperatures are in the mid-90's.

06/01/2015 by Andrews Forest
Just hours after we declared that the pair would not re-nest this year the female laid the second egg at 10:45.

05/07/2015 by Andrews Forest
A third adult repeatedly swooped on the nest over a period of around 40 minutes. The nesting adults engaged with the invading adult and flailed around on the nest with wings spread. During one of these encounters it appeared that the foot of the nesting male landed on or very near egg. Our four-second timelapse only captured one of these attacks witnessed on the direct camera feed, but it is clear that the egg was destroyed in one of these encounters.

05/06/2015 by Andrews Forest
First egg laid. Appears to have happened around 15:30. First brooding at 15:36

04/10/2015 by Andrews Forest
12:30 PM - First sighting of both adults on the nest. Plumage patterns look the same as for last year's pair.

04/02/2015 by Andrews Forest
One adult observed briefly on nest

07/24/2014 by Andrews Forest
Adult male and female visiting nest in the morning. Female arrives first and is calling repeatedly. Male begins bringing in moss, sticks and wood fragments. Can't imagine this behavior is going anywhere at this late date.

07/23/2014 by Andrews Forest
The nesting attempt has officially failed. At 5am the camera turned on to show an apparently empty nest. As the light improved the last nestling became visible sprawled off the east edge of the nest. The bird was oriented face down, with tail and one wing visible in frame. Site visit confirmed nestling dead. Adults arrived around 7am. Female remained on nest all morning, calling frequently. Cause of death on last two nestlings is unknown; best guess is that the deaths were related to insufficient prey delivery. First death was clearly due to a bump from female and fall from the nest to the ground. Remains of that chick found below the nest.

07/22/2014 by Andrews Forest
The nestling appeared much less active than it has in previous days. For an extended period in the morning and early afternoon it was lying in the nest or perched with head drooping. This has been typical in the early morning, but not mid-morning and afternoon. A number of nest observers are concerned, especially after the sudden weakening and overnight death of chick 2 on the 14th. The prey deliveries still seem less frequent than in June. The male delivered a small fish ca. six inches long at 8:45am. The female took the fish and appeared to fly off with it. It did not appear that the nestling consumed any of this fish. Female spent most of the morning on the nest; the male made frequent visits, but only once with prey. At around 9:00 am and again at 10:40 am, the female circled and occasionally bumped into the nestling as it stood with head drooped - perhaps trying to rouse it. 11:50 to 12:30 nestling is alone and in similar posture to chick 2 the evening before it died - lying down on nest partially rolled over to right side; head drooping but moving around periodically. For the rest of the day the nestling alternates between periods of upright standing and walking around the nest and periods of lying in nest, or standing with head drooping down to breast. Female returns at 14:30 and does same circling behavior around nestling until 14:44, when she flies off. Females returns at 17:18 and is on the nest until dark. Nestling awake and somewhat upright at dark. It appears that the nestling ate no food today. We will have to check on prey deliveries in preceding days.

07/18/2014 by Andrews Forest
It is now clear the adults will not remove the carcass of nestling 2. As the wind picks up during the day its feathers begin blowing around and off the nest, beginning with the down feathers. Female makes one prey delivery at 13:08, the remains of a partially eaten fish, ca. 5 inches long - perhaps 8 inches when whole. The last nestling ate from the fish for a period and then the female repossessed the fish and fed the chick (and probably herself) pieces of the fish. The male was only seen once at the nest for three minutes at 9:20, and arrived empty-footed. The nestling has taken a fancy to a particular stick in the nest - about two inches diameter and 2-2.5 feet long. It drags the stick around in the nest as it wanders.

07/15/2014 by Andrews Forest
At first light one chick is sprawled in northeast corner of nest facing south with wings partially splayed. Other chick is hunkered down in nest facing the awkwardly arranged chick and is partially blocking view; head movements show this chick is alert and alive. By 9:00 AM the living chick has shifted positions on the nest and the second chick is very obviously dead. No blood is visible on the feathers of the nestling, or any other sign of physical attack. Could it have been the cumulative effects of heat stress, dehydration and limited calorie intake? This week has been the hottest stretch of the season and the adults have been spending very little time around the nest in the afternoon. Prey deliveries also appear to be down considerably from June, although we haven't had a chance to comb through the photos to calculate daily delivery rates.

07/14/2014 by Andrews Forest
Two prey deliveries by adult female today. A small fish <5 inches long delivered at 11:03 and a medium fish Ca. 8 inches long at 12:36. In both cases the young fight over the fish. Both spend at least some time with each fish, but one nestling seems to dominate both times, and presumably consumes much more of both fish. Adult female is mostly around around nest in the morning - except when hunting - but flies off at 12:43 and never returns. Adult male makes only one appearance for two minutes at 17:07, and brings no prey. One chick appears more active at nest all day, while the other spends significant time laying in nest when not fighting over prey. From 1900 until dark this chick is sprawled on its side in south end of nest - periodically raising head but never standing. Other chick quite active during this period.

07/13/2014 by Andrews Forest
No prey deliveries at all today. Early in the nestling phase we were witnessing multiple fish deliveries per day. Adult male not seen at all around nest. Adult female off the nest more than on it, despite very high temperatures and full sun in the afternoon. The two remaining chicks are mostly feathered, with only a bit of down visible. Still a bit surprising there isn't a bit of shading going on in the heat of the day.

07/01/2014 by Andrews Forest
Third chick looking a bit weak all day. It was lying down with head down on nest a lot more than the other two, and not tracking the adult as well as it and the others chicks moved around for shading in the late morning and afternoon. At midday the two larger chicks were moving around and jockeying for position in the shade of the adult female. Adult female was moving around a lot on the nest and flailing wings as she responded to thrashing of nestlings and continued to provide shade. The third chick was partially accompanying this movement around the nest, but often far behind the other two. By 13:20 the third chick was isolated on the SW edge of the nest to the west of the adult female. The other two chicks were just north of the female, in her shadow, still jostling and jockeying for position. At 13:22 the female splayed her wings as she readjusted position; her left wing hit the third chick, who fell headfirst out of the camera view. The female was not looking at the third chick when she knocked it out of the nest, and did not appear to look in that direction during or after the fall. An unfortunate accident?

06/09/2014 by Andrews Forest
Third chick hatched sometime between 9:00PM on 06/08/14 and 6:00AM 06/09/14.

06/06/2014 by Andrews Forest
First chick hatched between 9PM on 6/5 and 6AM on 6/6. At this point still two unhatched eggs visible. 2nd Chick hatched by 09:20. 3rd chick has not hatched by end of the day.

05/04/2014 by Andrews Forest
Three eggs in nest. New moss additions partially obstruct view into nest cup. Best estimate is that 3rd egg laid night of third or early on 4th.

04/30/2014 by Andrews Forest
19:32 - second egg on nest. At 19:19 there was clearly only one.

04/30/2014 by Andrews Forest
Near record high temperatures for this date - 30 degrees C. Adults spent a significant portion of the afternoon shading the egg rather than incubating.

04/28/2014 by Andrews Forest
Male sharing some of the incubation duties. Male has nearly white breast. Female has much more brown mottling.

04/28/2014 by Andrews Forest
First full day of incubation. From 0600 to 1711, females was on nest and apparently incubating for 6.8 hours. Male was on the nest and in incubation position for a total of 3.9 hours. 22 switches between male and female during the day. Longest bout was 103 minutes for female and 54 minutes for male. Male mounted female during seven of these exchanges.

04/27/2014 by Andrews Forest
17:33 Female lays first egg. Incubation appears to begin within 30 minutes. Male also on egg periodically.

04/11/2014 by Andrews Forest
Male delivered a very large piece of Douglas fir bark to nest. At least 3 feet long, 6 inches wide, and more than two inches thick. First fish delivery caught on camera.

04/10/2014 by Andrews Forest
Very active nest-building day. Large, lichen covered branches delivered throughout the day, as well as clumps of moss. Frequent mounting.

04/08/2014 by Andrews Forest
Both adults seen on nest; first movement of old nesting material

04/03/2014 by Andrews Forest
First adult seen at nest