August 15 - September 19, 2026
This is an addendum to the August 14th report on the final nest box check at 3 Crabs for the 2026 season. That report continues below following these updates. The following narrative is based on my personal observations on 24 days, from August 15-September 14, sometimes visiting 3 Crabs both morning and evening. My goal was to document the progress of the last three chicks to hatch at 3 Crabs this year. And to avoid dealing with it later, I will tell you now that only two of the three chicks in this nest survived to fledge.
On August 14th most of the chicks had fledged. Only two nests, Box 5C and Box 6C, had chicks that had not fledged. Box 6C had four chicks that appeared to be about 18 days old. On August 24th, two of those chicks were looking out the door. The following day only one chick was at the door, and on August 26th no more chicks were seen at this nest and we assume all four fledged.
Purple Martin Box 6C at 3 Crabs. 8/24/2026
Purple Martin Box 6C at 3 Crabs. 8/25/2026
On August 26th the female in Box 5C was actively feeding her 15-day-old chicks, but they had not started looking out of the nest.
Purple Martin Box 5C at 3 Crabs. 8/26/2026
Purple Martin Box 5C at 3 Crabs. 8/26/2026
After August 26th, only this female and two other Purple Martins were seen. These other birds seemed to follow the female around but didn't appear to help feed the chicks. Perhaps they were two of the fledglings from Box 6C that weren't ready to leave with the rest of the colony. They were last seen on September 1st.
Purple Martin Box 5C at 3 Crabs. 9/1/2026
On September 3rd there were two chicks with their heads out of the nest waiting for food. They are now 23-24 days old, and could fledge as soon as September 6th.
Purple Martin Box 5C at 3 Crabs. 9/3/2026
At 7am on September 7th I got a long-distance photo from shore showing a fledgling getting fed on top of Box 4A. Not shown in this cropped image is a chick just inside the entrance to Box 5C. So it appears the first chick has fledged. At 6pm both chicks were getting fed in Box 5C.
Purple Martin fledgling from Box 5C at 3 Crabs. 9/7/2026
At 7:51 am and 8:12 am on September 8th, mom delivered dragonflies to the nest. After the second delivery she removed a fecal sac, immediately after which one of the chicks came out to the entrance, looked around for a minute, and then flew out. The other chick remained in the nest.
Purple Martin mother bringing dragonfly to chicks in Box 5C at 3 Crabs. 9/8/2026
Purple Martin mother bringing dragonfly to chicks in Box 5C at 3 Crabs. 9/8/2026
Purple Martin mother removing fecal sac from Box 5C at 3 Crabs. 9/8/2026
Purple Martin fledgling about to leave Box 5C at 3 Crabs. 9/8/2026
Purple Martin fledgling leaving Box 5C at 3 Crabs. 9/8/2026
At 7:50am on September 9th mom was flying around calling to her chicks to wake up and get out of bed.
Mother Purple Martin calling her chicks in Box 5C at 3 Crabs. 9/9/2026
At 8:05am on September 9th both chicks were crowding each other at the door to the nest. One joined her shortly after but the other stayed in.
Purple Martin chicks in Box 5C at 3 Crabs. 9/9/2026
At 5:00pm on September 10th both chicks out of the nest
Purple Martin fledgling from Box 5C at 3 Crabs. 9/10/2026
These martins roosted in the nest boxes for two more nights, and I found them there at sunrise. They left shortly after sunrise, and returned to the nest between 5:30-7:00pm. Then for two days I did not find them at sunrise, so they either left earlier or roosted elsewhere, but returned around 5:30pm and circled around the area calling to each other. I last saw them the evening of September 14th. However, a local birder posted a photo of one perched in a tree along the Dungeness River levee trail on the afternoon of September 15th. Finally, on September 18th, an anonymous eBirder posted a sighting of 2-3 martins on a power line across from Helen's Pond, just east of the 3 Crabs Estuary.
Purple Martin mom and fledglings from Box 5C at 3 Crabs. 6:21pm on 9/11/2026
August 14, 2026
This morning at 10:00, the OPAS PUMA Team conducted the fifth and final 2026 census of the 18 Purple Martin nests on the tide flats at 3 Crabs beach. Today, Ken and I were joined by Carrie, Dan, Dee Renee, and Len. It was 55 degrees with light wind and the tide was just below 0.0' and falling. Near perfect conditions for checking the nests.
I noticed the first fledglings perched on the post above Box 202 in the tidal lagoon on Sunday, July 26th. All chicks in the boxes over the tidal lagoon have now fledged. Many more fledglings were out of the nests on the tide flats this morning. Inside the boxes we found no eggs. We counted 15 chicks of various ages, from newly hatched to fledgling, in four nests over the tide flats. Our best, optimistic guess, is there were 36 fledglings out of the nest during our check. Adding these to at least six fledglings over the tidal lagoon, we've had 42 chicks fledge, and hopefully 15 more that were in the nests today. If those all fledge we estimate there were 18 breeding pair and 57 fledglings at 3 Crabs in 2026, compared to our estimate of 20 breeding pairs and 68 fledglings from these nests in 2025.
To see the census data from the June 14th, June 28th, July 16th, July 30th and August 14th surveys in a new window click: 2026 Purple Martin Census. Hint: If possible, drag the new window to the side so you can see the table while you look at each photo.
To see the June 14th photos in a new window click: June 14, 2026.
To see the June 28th photos in a new window click: June 28, 2026.
To see the July 16th photos in a new window click: July 16, 2026.
To see the July 16th photos in a new window click: July 30, 2026.
When I first started putting the above links to each previous survey here, it seemed like a good way to quickly check the changes in a nest from one survey to the next. But now, with five surveys, it is really tedious to use that method. So if you really want to see the changes in each nest from one survey to the next, click: All surveys.
The 18 nest boxes are mounted at the top of the three pilings, about 15' above the sand.
To inspect a box, I lean a ladder against the piling, climb up about 10', and insert an endoscope through a small hole in the front of the nest box. I can view what the camera shows on my cell phone, and Ken and the rest of the team can view it on their mobile devices from the ground below. If I place the ladder correctly, I can insert the endoscope into all six nest boxes on the piling. I quickly take pictures, then move to the next piling. So we only disturb the birds for 3-5 minutes at each piling.
Here is closer view of this process. Ken sits on his throne looking at the endoscope images on his phone, while Carrie updates the spreadsheet as Ken and I tell her what we are seeing in the nest. Len and Dan steady the ladder and hope I won't fall on them. Photo courtesy of Dee Renee Ericks. (8/14/2026)
To see a short (and silent) video of this process in a new window in your web browser click here. The video is 59 MB, so I don't recommend trying to play it on your cell phone. It takes about 15-20 seconds to load.
The "triplex" boxes are labeled nA, nB, nC, from top to bottom, so the first piling has 1A, 1B, 1C, 2A, 2B and 2C. The second and third pilings continue the numbering system. We write the box numbers at the back of the nest box to make it easy to identify the box from the photo.
Purple Martins typically lay 4-6 eggs, one per day, generally in the morning. Incubation starts with the second to last egg, so the chicks all hatch within a day or two of each other.
- Egg size: 0.8-1.1" long; 0.6-0.8" wide
- Incubation: 15-18 days
- Fledging: 26-36 days
Below are the endoscope photos of each nest.
Purple Martin Box 1A at 3 Crabs. 8/14/2026
This is very discouraging. On June 28th there were five freshly laid eggs in a clean nest. On July 16 there are only dead chicks in a very messy nest. On July 30th the dead chicks were gone and some work had been done on the nest, but there were no new eggs. The nest appears to be the same today.
Purple Martin Box 1B at 3 Crabs. 8/14/2026
All five eggs we found on June 28th hatched, and the chicks looked healthy on July 16th. On July 30th we found only three chicks that looked close to fledging and we assumed the other two had recently fledged. Today the nest is empty.
Purple Martin Box 1C at 3 Crabs. 8/14/2026
This nest presents another mystery. There were two eggs on June 28th and four on July 16th. On July 30th there were only two chicks that appeared to be only 3-4 days old, and no eggs. Today the nest is empty and there are no dead chicks in it. Since the chicks that were there on July 30th couldn't be more than 20 days old today, we assume they died and were removed from the nest.
Purple Martin Box 2A at 3 Crabs. 8/14/2026
On July 16th we noted that four of the five eggs from June 28th had hatched, and the chicks looked a bit stressed. On July 30th there were clearly two fully feathered chicks that looked ready to fledge, but at least one dead chick in the nest. Today the nest empty and we assume the two chicks from July 30th fledged.
Purple Martin Box 2B at 3 Crabs. 8/14/2026
On July 16th there were three chicks in 2B, which matched the 3 eggs we had on June 14th. These are likely the first chicks at 3 Crabs this season. On July 30th we found two fully feathered chicks. These may have fledged and are just back in the nest resting. Today the nest is empty and we assume the two chicks present on July 30th have fledged.
Purple Martin Box 2C at 3 Crabs. 8/14/2026
On July 16th there were three eggs that were laid after June 28th. On July 30th there were no eggs visible and one newly hatched chick on a bed of green leaves. Today the nest is completely bare. All nesting material and the chick are gone. The chick could not have fledged yet, so we assume it died.
Purple Martin Box 3A at 3 Crabs. 8/14/2026
We believe the female in 3A laid her sixth egg early the morning of June 14th, and we found 4-6 newly hatched chicks on June 28th. On July 16 the chicks appeared to be least 18 days old. On July 30th the nest was empty and we assumed that all six chicks fledged successfully. We continue to believe that today.
Purple Martin Box 3B at 3 Crabs. 8/14/2026
On June 14th, Box 3B had the start of a nest, with some green leaves indicating eggs were on the way. Not much change on June 28th, but on July 16th and July 30th this box was bare, as it is today. Sometimes PUMA will remove the nest material from one box to use in another.
Purple Martin Box 3C at 3 Crabs. 8/14/2026
Box 3C had 5 eggs on June 28th, and five chicks on July 16th. On July 30th, three fully feathered chicks were visible, and possibly a fourth, although two may have fledged. Today the nest is empty and we assume all five chicks fledged successfully.
Purple Martin Box 4A at 3 Crabs. 8/14/2026
This is another mystery nest. Box 4A had five eggs on June 28th, all laid after our June 14th check. On July 16th there were two 7-day-old chicks and one egg that should have hatched already, On July 30th, Box 4A was bare, with all the nest material removed. It was too soon for those two chicks to have fledged, so we assume they did not survive. Today the box is still bare.
Purple Martin Box 4B at 3 Crabs. 8/14/2026
Box 4B is another one where a nest was started early but no eggs were ever laid.
Purple Martin Box 4C at 3 Crabs. 8/14/2026
Four eggs from June 28th hatched but the 2-3-day old chicks looked a bit stressed on July 16th. On July 30th they looked healthy. Today they look like they may have fledged, but came back inside to stay warm.
Purple Martin Box 5A at 3 Crabs. 8/14/2026
All five eggs in Box 5A on June 28th hatched and the chicks looked OK on July 16th. On July 30th there was one fully feathered chick that looked close to fledging, but there appeared to be one or more dead chicks in the nest. Today the nest is empty, and we assume the chick fledged.
Purple Martin Box 5B at 3 Crabs. 8/14/2026
The grasses we primed Box 5B with were removed early in the season and this box has not been used other than for roosting.
Purple Martin Box 5C at 3 Crabs. 8/14/2026
On June 14th all the grasses we primed Box 5C with had been removed. On June 28th new nesting material had been delivered, along with some green sea grass. The nest looked complete on July 16th, and on July 30th there were three eggs. Today we found three hatchlings that look about 2-3 days old. If they survive, they will be the last to fledge, likely after most of the colony begins their migration.
Purple Martin Box 6A at 3 Crabs. 8/14/2026
Box 6A had two eggs on June 28th and four on July 16th. On July 30th there were four hungry chicks. Today there are at least three, if not four fully feathered chicks. Perhaps they have fledged but just returned to the nest to rest and keep warm.
Purple Martin Box 6B at 3 Crabs. 8/14/2026
Box 6B had 5 eggs on June 28th and five 2-3-day old chicks on July 16th. On July 30th there was a pile of at least four and likely five chicks. Today the nest is empty, and we assume all the chicks fledged.
Purple Martin Box 6C at 3 Crabs. 8/14/2026
There were five eggs in Box 6C on June 14th. On June 28th we found one whole egg and one cracked egg. There were three chicks out of their eggs and one struggling to get out. See the video below for better detail. Sadly, on July 16th those chicks and eggs were gone and there were four new eggs. What happened? On July 30th there were four newly hatched chicks. Today they appear healthy and growing. With luck they will fledge by the end of the month and be ready to migrate south with the colony.
If you have Internet Explorer 10 or current versions of Chrome, Firefox, or a new iPad, you should be able to play a short video of the fourth chick hatching in Box 6C..
Click Here to play the video in your web browser (requires an HTML5-compliant web browser). When you finish, click the HOME button at the bottom left edge of the page, or click the picture of me in the upper left corner of the page, to return to this page.
If the video won't play click here to try it with your system software.
