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.
Wendy D reports: I am very sad to report that I went to Constance's nest 2550 at least once per week and usually I sat for a few moments three times per week. I have never seen her or any activity at the nest since my last report where I feared she and the eggs were gone. I hope she is ok. This is the second year (2021 and now 2023) that something happened to her eggs. I hope she will return and have better success next year.
NOTE: We are listing about 5/14 as date of nest failure.
Wendy D reports:
I drive by at least two times per week. I can no longer see Constance and have not seen activity from the mate either. I am hopefully assuming she is still sitting on the nest. I know last year she went MIA. My fingers are crossed that she is successful this year. It was always hard to see her but I could see the tiniest bit of a white moving like her head. I have not been able to even see this.
NOTE: We will assume all is well until we are sure.
some observation dates included: April, 17, 20, 25 and May 12.
Wendy D reports: Wed March 29th, Constance is clearly sitting down in the nest on eggs! The photo is the first day of sitting. Each time I go, I can see her head a tiny bit and she will often be looking around as if a protective mother. I have not seen the male since she was sitting. She seems content so I am sure he is around.
Wendy D reports: 2550 is empty. I have not seen Constance or her young. The nest is so deep I only saw the white of a head one time as I reported. Could it have already fledged? On all of the last three drive bys her nest is empty
Wendy D reports: Constance 2550 is still standing over her chick (s) . Her nest is so deep that I just watch the behavior and know that I saw the one. There was another adult on the light so I was glad to see Dad helping!
Wendy D reports: I went on May 3, 13, 20, 23 and 24 and every time she is faithfully standing guard over her nestling(s). Still just one glimpse of the top of a tiny white head which I reported last month.
Wendy D reports: So happy to report that I saw Constance fly into nest 2550 on April 18th, stand on the side of the nest and continually fuss into it. She must have at least one young. I cannot see the young yet. It was just very obvious parenting behavior!
Wendy D reports: May 10th Constance hatched her baby!!! This may have happened late last week, she was sitting on the side of the nest, but I could not see anything. This time I clearly saw a little chick's head! So far it just looks like one.
Wendy D reports: Constance, way down in the nest definitely on the egg(s). I have to watch for a good 10-15 min to see if I see movement at the top of the nest, otherwise I would not see her at all. (report for 3/35-3/19)
Wendy D reports: Constance was back at the nest with one young. NOTE: based on this observation and June 18, we are guessing both fledged and still return to the nest as expected.
We recorded fledging as June 18 since this was the first report with no nestlings and would be appropriate based on the incubation/hatching dates.
Wendy D reports: Constance is busy with a very active little chick. The chick has been checking out the big world around it very curiously and actively. The little head was always moving. Mom was in the nest with the chick. Very exciting!
Wendy D reports: Lissa, no one around the nest, although I could hear what sounded like a hungry young Osprey near by. I could not find it. I know last year her chick was first to fledge and I could find it in the woods across the lot. Much of that woods has been cut, but I think the young one must have been near by.
Wendy D reports: I have been consistently checking on my Osprey Moms because of this heat. The other day Lissa stood over her chick and shaded it with her wings out. She looked so hot! Today Mom was standing up in the nest with one chick.
Wendy D reports: While no young are visible, Mom is no longer in incubation posture but is standing up. Probably means there are chicks.
while we can not be sure, we have listed May 7th as a possible hatching date.
Wendy D observes: I went again yesterday and have been going weekly. Both nests have adult white heads which appear when the adult moves. The nests are so high up it is hard to see anything. They must be deeper this year because I cannot see the birds on them until they move. I go at least every week, often more. My last view was this morning at 9:30 am. I saw Moms on both nests. No other osprey in area.
Wendy D reports: Lissa remains on her nest hunkered down so I only see a little white of her head. She definitely seems to be sitting on eggs. I have not seen her mate but assume he is out fishing. (Note: we will record this as confirmation she is incubating eggs. This date is our best guess.)
Wendy D. reports: Several times prior to the 2nd I went by and saw the juvenile Osprey sitting on side of nest. As of Aug 2nd I have not seen it. I think we can safely say it fledged. What a thrill. Sign me up for these nests next year!!
Wendy reports: Last Thursday the 19th I saw the young Osprey squawking from the NEST and an adult flew by during my 15 min.
Today I again see the juvenile squawking constantly and the Lissa sitting and preening in the next light pole.
Observer reports that LIssa, the Mom, appeared to be feeding one chick. I could see a head just at the top of the nest and a second chick moving close to the mother, separate from the other, but not really able to see much. Verified 2 chicks.
Note: based on this, our best guess is that they hatched around the 15th of May....but that is our guess.
observer reports: Nest 2550 there was a bird sitting horizontally and low in the nest. I have seen an osprey on the edges but never in this nest before. I will call her Lissa. That is with two S's. It is appropriately a supreme mother goddess in African mythology