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.
This was the first chance I've had to visit this nest this year, and I was pleasantly surprised to see a nesting pair in it!! One adult was on the nest for an extended period of time and a second adult sat nearby.
I was never able to confirm any nesting at this box. I have a hunch that perhaps the pair moved their nest to the Summit Bridge. I did not find the pair here at about the same time I noticed them on the bridge. Hmmmm...
Observed spotted chick in nest with adult for duration of observation period. Adult sat with splayed wings probably due to the heat/humidity of the day. Chick made lots of calls while I watched. No second adult seen this time. Black vultures on power tower near the canal.
Clearly identified one chick in nest. Pale red eyes and still fuzzy. One adult sat near nest and ate, while youngster just looked around. Other adult not visible for duration of observation time. Added photo of adult and chick as seen on nest.
Both adults observed eating fish. One adult brought fish to nest, spent time inside the nest, then flew with fish to nearby wooden structure. The other adult ate a fish on a nearby power line structure for duration of observation. Added new photos of observed behaviors.
Both spotted chicks are fully feathered and BIG! Both chicks observed at the nest; one flew during the observation period. Both adults were near...one at the nest, the other nearby on a electrical transmission tower. Photos of the family added today.
Both adults present at nest; one adult flew from nest about 5 minutes after I arrived; the other adult remained at edge of nest. After watching closely for a while, I could definitively see at least one small hatchling!
Observed two adults on nest platform. One brought nesting material to the other sitting on the nest. Both sat together for about 5 minutes, then the first flew off again. No other raptors/vultures in sight during recording time.