For the Birds: Nesting season has its ups and downs

Photo by Chris Bosak
A northern flicker hollows out a hole in a snag for a potential nest site, New England, April 2026.

While the majority of spring migrants are still working their way north, many of New England’s year-round birds are already getting down to the business of nesting.

I’m sure I’ll see plenty of nesting activity as the spring progresses, but last week I witnessed two interesting scenes related to nesting. 

The first was in my backyard. As I approached one of my birdfeeders to throw in a handful of safflower seed, I noticed a northern flicker dart off into the woods. Its white rump patch gave away its identification. I was fairly certain the flicker had been clinging to a topped-off dead tree a dozen or so yards away from the feeder, and I made a note to approach the feeder more carefully next time.

Sure enough, I returned half an hour later and found a flicker on the same snag. I kept my distance this time and watched as the flicker worked on hollowing out a hole in the snag. I observed for a few minutes and went back into the house.

Over the next several days, I watched a male and female flicker take turns hollowing out the hole. It was slow-going, but the flickers kept at it dutifully. I’ll continue to watch the progress, and, hopefully, the flickers will successfully build a nest there and raise young. That would make for an interesting spring and summer in my yard.

Watching how slow the progress was and how much work the flickers put into making the cavity, I have new respect for woodpeckers and how difficult the job of securing the future of the species is. I also see why so many birds and animals utilize old woodpecker holes for their own nesting purposes. The hard construction work has already been done.

I read that flickers are uncommon among woodpeckers in that they often reuse cavities from the previous year. I don’t blame them. I can’t imagine doing that every year.

From that hopeful scene to one a bit darker: I was sitting in my office when I noticed movement through the window. The motion stopped in a tangle of vines where the parking lot and woods meet. I lifted my binoculars (yes, I have a pair at the office) and spotted a robin sitting in a nest. I was excited and concerned at the same time. While the nest itself was pretty well hidden, it was right at the edge of the woods and fairly obvious with the bird in the nest.

I watched a male and female come and go throughout the day and even shared the news with some co-workers. Even while I thought about how neat it would be to have a flicker nesting at my home and nesting robins visible through my window at work, I remained cautiously optimistic about the robins.

Later in the afternoon, I saw a blur flash past my window. By this time, a car in the lot had blocked part of my view of the vines where the nest had been built. I had a feeling what the blur was, but hoped I was wrong.

I stood, and my fears were realized. A red-shouldered hawk was standing on the nest tearing it apart. The robins took a few swipes at the hawk, but the larger bird of prey hardly seemed to notice. 

The robins, of course, abandoned the nest and haven’t returned. Thankfully, it’s still very early in the season, and the robins can try again–hopefully, in a better place next time. 

I was confused about the encounter. The obvious conclusion is that the hawk raided the nest to eat the eggs. However, I don’t think the robins had eggs in the nest yet. I had just noticed the robins for the first time that day. Surely, since it was in direct sight of my office window, I would have noticed the robins building the nest prior to that day.

Then why would the hawk go after the nest like that? Maybe it attacked the nest in the hopes that there would be eggs or baby birds in it and came up empty. Or perhaps it was a territorial message, as red-shouldered hawks do nest on the property.

Regardless of the reason, I wish the robins luck with their next attempt. I also wish the hawk luck on its next quest for food. And, of course, I wish the flickers luck in their nesting season.

For the Birds: Oriole nests are something to behold

Photo by Chris Bosak A Baltimore oriole builds a nest at Presque Isle State Park, Erie, Pa., May 2025.

Everything about a Baltimore oriole nest is ingenious. From the design and materials to the location selection, the nest is a perfect haven to raise young birds safely from predators (for the most part).

Fall is the best time to find oriole nests, after the leaves have fallen. Of course, by that time, the orioles are long gone, and the nest is a mere relic of the past breeding season, but it’s still interesting to see one of the pouch-like nests dangling from the end of a branch.

The other week, I was lucky enough to watch a female oriole build one of those remarkable nests. I was walking along a trail that was teeming with yellow warblers, catbirds, and Baltimore orioles when I glanced up and saw an oriole perched at the end of a branch overhead.

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Oriole builds nest; construction goes quickly

Photo by Chris Bosak A Baltimore oriole builds a nest at Presque Isle State Park, Erie, Pa., May 2025.

Baltimore orioles have one of the most unique nests of all the songbirds in New England.

According to allaboutbirds.org, “Baltimore Orioles build remarkable, sock-like hanging nests, woven together from slender fibers. The female weaves the nest, usually 3 to 4 inches deep, with a small opening, 2 to 3 inches wide, on top and a bulging bottom chamber, 3 to 4 inches across, where her eggs will rest. She anchors her nest high in a tree, first hanging long fibers over a small branch, then poking and darting her bill in and out to tangle the hank. While no knots are deliberately tied, soon the random poking has made knots and tangles, and the female brings more fibers to extend, close, and finally line the nest. Construction materials can include grass, strips of grapevine bark, wool, and horsehair, as well as artificial fibers such as cellophane, twine, or fishing line. Females often recycle fibers from an old nest to build a new one. Males occasionally bring nesting material, but don’t help with the weaving. Building the nest takes about a week, but windy or rainy weather may push this as long as 15 days. The nest is built in three stages: first, the female weaves an outer bowl of flexible fibers to provide support. Next, springy fibers are woven into an inner bowl, which maintains the bag-like shape of the nest. Finally, she adds a soft lining of downy fibers and feathers to cushion the eggs and young.”

During my recent trip to Presque Isle State Park in Erie, Pa., I came across an oriole pair building a nest. We saw tons of orioles overall, but this was the only nest I found under construction. I was amazed at how much progress the orioles made in just one day. The first photo below was taken on a Sunday and next two photos (and the one above) were taken on a Monday. Nature is amazing.

Click here to see photos of sandhill cranes at Presque Isle.

Photo by Chris Bosak A Baltimore oriole builds a nest at Presque Isle State Park, Erie, Pa., May 2025.
Photo by Chris Bosak A Baltimore oriole builds a nest at Presque Isle State Park, Erie, Pa., May 2025.
Photo by Chris Bosak A Baltimore oriole builds a nest at Presque Isle State Park, Erie, Pa., May 2025.

Birds to brighten your day: April 24

Photo by Chris Bosak
A black-capped chickadee checks out a birdhouse in a backyard in New England, April 2020. Merganser Lake.

A Day on Merganser Lake XV

Well, it doesn’t look like the bluebirds are going to nest in the bluebird box I got a few weeks ago. My property is not ideal habitat for them as it’s more wooded than open. At least they are still visiting every day and keeping me entertained. The good news is that black-capped chickadees keep checking it out. Hopefully a pair will decide to move in. They are not bluebirds but I’d certainly take it.

(Repeat text for context:  I’m running out of COVID-19 lockdown themes so from now until things get back to some semblance of normalcy, I will simply post my best photo from the previous day. You could say it fits because of its uncertainty and challenge. I’ll call the series “A Day on Merganser Lake,” even though that’s not the real name of the lake I live near in southwestern Connecticut, it’s just a nod to my favorite duck family.)

Photo by Chris Bosak
A black-capped chickadee checks out a birdhouse in a backyard in New England, April 2020. Merganser Lake.

For the Birds: Unexpected, welcome discovery

Photo by Chris Bosak
A gray catbird with food perches on a branch in New England, summer 2019.

I heard what I was pretty sure was a scarlet tanager high in one of my oak trees. The thick foliage makes it nearly impossible to find anything up there. Even a brilliantly bright red bird like a scarlet tanager could easily be hidden from view.

I looked with my naked eye for several minutes, hoping to spot some motion to give away the bird’s location and identity. To my frustration, I couldn’t find a thing, even though I knew right where the song was coming from.

So, I figured I’d try scanning the area with my binoculars with the hopes of catching a glimpse of some bright red among the dark green leaves. Picking out a bird among thickly leafed-out treetops is usually a lesson in futility and humility.

But not this time.

No, I didn’t find a scarlet tanager. I did, however, find the active nest of an eastern wood-pewee. Somehow, my binoculars trained themselves right on the spot. The small, cupped nest is built in the Y of a dead branch sticking out among the impenetrable foliage, about 40 feet high.

I watched the mother pewee for a few minutes before she flew off into the woods. I noticed a bright orange object in the nest. I assumed it was a mushroom of some sort because the dead branch is covered in a white fungus. With my binoculars, however, I discovered it was the mouth of a baby bird waiting to be fed.

Sure enough, about two minutes later the mother bird returned and a few other orange “mushrooms” appeared.

It was the first time I had ever found an active eastern wood-pewee nest Continue reading

Freeing a kingbird from the death grip of fishing line

Photo by Will Bosak
Kingbird rescue, Danbury, CT, 2019.

It started with a bird pooping on my forehead and finished with me tipping over the canoe in a mucky, heavily vegetated part of the lake. The adventure was well worth it, however, as we successfully untangled and freed an eastern kingbird from the death grip of abandoned snagged fishing line.

Photo by Will Bosak
Kingbird rescue, Danbury, CT, 2019.

I was sitting in my home office writing away about something or another when I saw out the window my 12-year-old son sprinting up the road and turning onto the driveway. He was fishing with two of his friends at the nearby fishing hole so I briefly panicked that someone had gotten hurt; perhaps a barbed hook embedded in a thumb or something like that. 

I opened the window and yelled down: “What’s wrong Will?”

“There’s a bird stuck on fishing line dangling from a tree,” he said. “Come help it. It’s freaking out. I feel so bad for it.”

I rushed to the car and drove to the spot, even though it’s literally only a few hundred yards away. Nagging tendonitis in my foot has prevented me from making that walk — or any other walk for that matter — for weeks now. 

“I think if we go through the woods we can get to it,” Will said as he pointed out the bird.

I recognized the bird as an eastern kingbird. The white band at the tip of its tail gave it away. 

“I don’t think so, Will. All that vegetation is growing from the water so we’ll never reach it from land. We can probably get it with the canoe.”

I hobbled back to the car as quickly as possible and fetched the canoe. I used only one strap around the middle of the canoe to fasten it to the car since I was going such a short distance.

Back at the fishing hole, Will hustled to help me get the canoe off the car and to the shore. 

“I’ll sit up front, you sit in the back and paddle us to the bird,” I told Will.

“I’ll take photos, too, dad. Where’s your phone?”

Will got us into the weeds and immediately the frantic bird crapped right on my forehead above my left eye. I didn’t even notice it, but Will let out a huge laugh to let me know.

“Guys! The bird pooped on my dad’s head!” he called excitedly to his friends.

I didn’t care about it at the moment. I just wanted to help the bird, which was now even more frantic with us closing in on it. 

I grabbed some sturdy stems and pulled us into the vegetation even more to prevent us from drifting as I was soon to have a knife and, hopefully, a bird in my hands. We stopped right below the bird. I stood up carefully and extended for the bird. It was just out of reach.

“Give me the paddle, Will.”

I used the paddle to pull down the branch a few inches. I grabbed it and pulled the branch, bird, and tangled mess of fishing line toward me. Wow, that’s a lot of fishing line, I thought to myself. With my free hand I used the knife of my trusty Leatherman to cut the line above the bird’s wing. I closed the knife, tossed it on the floor of the canoe, and sat down with the highly agitated kingbird in my hand. It bit at my hand and made me thankful that it wasn’t a great blue heron. 

A length of fishing line immediately came free but there was still line wrapped tightly around the wing. I held the bird and pulled gently on the end of the line. Will used the knife to cut the line as close to the wing as possible. 

I dug in a little more to make sure there wasn’t a hook stuck in the wing. The kingbird obliged by extended its wing to expose the wound. Thankfully, there was no hook and the remaining piece of fishing line that had held the bird captive fell to the floor of the canoe. The wound did not look serious and I breathed a sigh of relief that a hook was not involved.

Satisfied that the bird was free from all fishing line I opened my hand to see if it was able to fly. In about half a second the kingbird burst out of my hands and disappeared into the woods. 

The kingbird was lucky. Lucky that Will went fishing that afternoon and was able to spot it. Lucky that we had a canoe handy to access the water. Lucky that it was tangled relatively close to the water instead of higher up and out of reach. Lucky it was only tangled and not hooked. 

I looked around and noticed that the trees in the area were riddled with abandoned lines, bobbers, hooks, sinkers, and lures. Will steered me to them and I pulled down the ones that were in reach. I pulled down the tangle that had snared the kingbird and noticed the bird’s nest was in a branch about a foot above the twisted line.

Thankfully we were only a few feet from shore when I got a little too confident in my reaching and swamped the canoe.  Swamped is a good term because we tipped over in thick, slimy aquatic vegetation. My legs felt for the bottom of the lake but only dug themselves deeper into a spaghetti bowl of slippery stems, roots and goodness knows what else. 

Will, thankfully, had the wherewithal to immediately take my phone out of his pocket and toss it onto the shore. The phone was fine and Will scored points with his father for acting so quickly despite being dumped into a mucky mess. 

We lumbered onto shore — me very gingerly on the uneven terrain — and dragged the half-full canoe onto land. Our legs were blacked by bits of partially decomposed leaves that fell into the water over the last several years. 

Once on land we had little laugh and rejoiced as two kingbirds flew and chattered among the trees just off the shore.

Osprey continue to thrive in Connecticut

Photo by Chris Bosak An Osprey sits in a nest at Veterans Park in Norwalk, Conn., spring 2016.

Photo by Chris Bosak
An Osprey sits in a nest at Veterans Park in Norwalk, Conn., spring 2016.

You know a bird species is doing well in an area when you take a short break from work to get a nice photo of the bird and return to work a handful of minutes later with good results. The Osprey in coastal Connecticut is one such bird and area. Southern Connecticut, of course, is not the only place where “fish hawks” are thriving. They are doing well up and down the East Coast and many parts inland, too. They nest along salt, br Continue reading

When is nesting season over?

Photo by Chris Bosak A Mourning Dove sits on a nest in early July at Sellecks/Dunlap Woods in Darien.

Photo by Chris Bosak
A Mourning Dove sits on a nest in early July at Sellecks/Dunlap Woods in Darien.

Procrastinators rejoice. I’m going to give you an excuse to put off a few chores for another month or so.

Do you have trees on your property that need to come down? Bushes that need to be pruned? Perhaps a field or meadow that needs to be mowed?

Well, I’m not only giving you permission (not that you need that anyway) to hold off for a while, but urging you to do so.

An interesting email came my way this week from a New Hampshire couple. They had purchased property about 25 years ago that at the time was an abandoned Christmas tree lot. Most of the trees are now dead or dying and need to come down. The couple, to their credit, wants to make sure the nesting season is over before they go forward with any of the work.

So, just when is it safe to take down trees or cut fields that may house nesting birds?

There’s no exact date, of course. In general, though,

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Looking back at a Barn Swallow nest

Photo by CHRIS BOSAK Young Barn Swallows look for food from their mother, which is returning to the nest with food.

Photo by CHRIS BOSAK
Young Barn Swallows look for food from their mother, which is returning to the nest with food.

Here’s a group of photos I took at a Barn Swallow nest, which was built on a light fixture in the covered portion of the parking lot where I work. The parents dive-bombed and swooped at all the people who parked nearby. They had only one brood before moving on. It’s a credit to the building owner that they let the nest remain throughout the entire process. This was a few summers ago, but I’ve never published all of these photos.

More photos below. Continue reading

It’s nesting season all right

Photo by Chris Bosak A Baltimore Oriole nest in Stamford, Conn., May 2015.

Photo by Chris Bosak
A Baltimore Oriole nest in Stamford, Conn., May 2015.

I took a walk around a local park in Stamford, Conn., yesterday. I knew the warbler migration was winding down, but I figured I’d see a few late migrants and perhaps something else interesting. Something always happens when you make the effort to take a walk in the woods.

I was walking happily along looking up in the trees for movement. With the leaves out now, movement is the only way to spot most birds. I glanced down and suddenly found myself tip-toeing frantically to avoid bird droppings all over the trail. Not that it would have been a big deal if I stepped on one, but my brain recognize Continue reading