On Would possibly 11, 2024, to lend a hand rejoice International Large Day and lift finances for the Cornell Lab’s conservation paintings, Crew Sapsucker headed to the Nice Lakes to discover two very other landscapes. One staff searched moderately populated Chippewa County, Michigan, at the shore of Lake Awesome; whilst the opposite scoured bustling Chicago on Lake Michigan. Energized through the shimmering aurora borealis and the anticipation of gazing migration spread within the center of North The us, the 2 groups spent just about 24 hours discovering as many hen species as imaginable.

Beginning with Mallards and Crimson-necked Grebes earlier than morning time, and finishing with a Commonplace Nighthawk after nightfall, the groups discovered 203 overall species* (164 for Chippewa County, 132 for Chicago). Crew Sapsucker’s cumulative eBird go back and forth file showcases the avian variety of the Nice Lakes, from surprises like Yellow-headed Blackbird and Wilson’s Phalarope to chic scenes similar to a Black Tern coursing over a marsh within the fading gentle. In conjunction with the tens of hundreds of different eBird checklists submitted on International Large Day and on a daily basis, those observations upload to our skill to trace the standing of hen populations and pinpoint which of them want our lend a hand maximum.
The Cornell Lab is thankful to the numerous donors who supported Large Day, our largest conservation fundraiser of the yr; and to LOWA Boots for sponsoring Crew Sapsucker.
A Story of Two Lakeshores
“Being within the Higher Peninsula is an opportunity to enjoy what wild lakeshores are like and the way birds use habitats which are principally untouched,” mentioned Marshall Iliff, captain of Crew Chippewa. “The birds are extra unfold out as a result of they’ve extra puts to be.”


Against this, Chicago staff captain Jenna Curtis mentioned spending the day in a bustling city that’s additionally on a big migration direction is an opportunity to witness firsthand the significance of shielding herbal habitats in a abruptly growing international. “Chicago is without doubt one of the best 40 greatest towns on the earth. Our key websites in Chicago supply havens for each birds and other people,” mentioned Curtis We might by no means have discovered the selection of species we did if it wasn’t for key conservation spaces like Montrose Level and the Calumet Lake space, and the folks running to offer protection to them.”
In each areas, migrating birds listen alongside main traces of lakeshores, which is a part of what makes lighting and structures in Chicago one of these severe factor, particularly throughout migration. In Chicago, migrating birds listen in small spaces of stopover habitat alongside the lakeshore, the place structures filled with reflective glass and shining lighting provide severe hazards to their well being.
In combination, the 2 websites spotlight the function of the Nice Lakes and the Mississippi Flyway each for migrating land birds, which will have to pause right here earlier than crossing the huge lakes, and for waterbirds that use the Nice Lakes as a direction into the huge wetlands that sprawl throughout northern North The us.
A Migration-Crammed Morning in Northern Michigan

Crew Sapsucker-Chippewa County knew they’d face demanding situations discovering birds within the huge northern forests, fields, and marshes of the Higher Peninsula.
“The best way to plot a large day is to grasp the place other sorts of birds are breeding or organising territories,” says staff captain Marshall Iliff. “However birding on this northern area on Would possibly 11, we knew we had been a couple of week or two early for many of that, so it was extra about how migration used to be shaping up that day.” Iliff, a mission chief with the Cornell Lab’s eBird mission, used to be joined through Lab group of workers participants Gemma Clucas, Chris Tessaglia-Hymes, Tom Auer, and Evan Griffis.
In spite of a forecast for rain and overcast skies, the elements became transparent through 3:30 a.m. That’s when staff captain Iliff heard the primary birds of the day—two Crimson-necked Grebes calling from a close-by lake. He roused his teammates, they took a second to bask within the red gentle of the aurora, after which Large Day used to be on.
Their first predawn forestall used to be Whitefish Level, a peninsula that juts out into Lake Awesome and acts as a herbal focus level for birds migrating over or across the Nice Lakes.


Sooner than morning time broke, the staff had recognized a number of dozen species, most commonly through name, together with American Pipit, Swainson’s Thrush, Commonplace Redpoll, and Lengthy-eared Owl. They even discovered a fearless Spruce Grouse in the course of a rural street.
Then it used to be again to Whitefish Level, now at about an hour after morning time, the easiest time to stake out a sit down spot at the dune-edged, sandy level, and let the morning flight of migrants wash over them.

Clearing skies and gentle southerly winds intended quite a few birds arriving within the area in a single day, and in slightly below 3 hours the staff picked up 74 species. As geese, grebes or even a Trumpeter Swan moved over the water, land birds, together with 15 warbler species, sought their approach alongside the coastline. “The warbler flight used to be truly a laugh as a result of they more or less got here as much as the dune after which became round, in order that they paused for a second lengthy sufficient for us to ID them,” mentioned staff member Tom Auer.
Raptors, Blue Jays, bluebirds, and a bunch of different species had been at the transfer as smartly, together with Tough-legged Hawk, Night time Grosbeak, Semipalmated Plover, Canada Warbler, and Bay-breasted Warbler.


“To peer the massive flocks of Blue Jays overhead and these kinds of raptors coming through, and loons and sea geese, after which the entire warblers,” mentioned Gemma Clucas, a U.Okay. local. “It used to be mind-blowing to look these kinds of several types of birds in truth at the transfer.”
At noon the staff left the coastline to move southeast for prairie potholes, marshes, and a mixture of wooded area varieties.
Two days previous, throughout scouting, they’d discovered an early-arriving Kirtland’s Warbler, the long-lasting, endangered species of the area’s jack pine forests. That day they’d been handled to nice seems to be or even pictures, however on Large Day the staff arrived throughout a noon lull. Fortunately, the pointy ears of 2 of the staff participants had been in a position to listen to the chattery warble of 1 far-off male Kirtland’s.
In a box close to Brimley, Michigan, the staff racked up an excellent six species of blackbirds, come with an extraordinary Yellow-headed Blackbird first discovered through Clucas throughout scouting.


The staff endured to develop their listing, even though it wasn’t all the time a rosy image. At one forestall they had been hoping for Golden-winged Warbler in conjunction with some species strangely uncommon for the realm, similar to White-breasted Nuthatch, Picket Thrush, and Downy Woodpecker. After donning dust boots and slogging thru swampy fields and woods, they got here away with precisely 0 of the ones goal birds.
Crew captain Marshall Iliff had set the quantity 165 because the “absolute higher prohibit” of what the staff may just hope to reach on their Large Day. They had been round 150 through the overdue afternoon, due to the staff’s unflagging efforts (they submitted 43 separate eBird checklists in round 19 hours) together with thrilling rarities similar to Wilson’s Phalarope, American Avocet, Western Meadowlark, and Golden Eagle.




It used to be after 8:00 p.m. when the staff rolled into their final birding places, the marshes and mudflats on the mouth of Munuscong River, a part of a sequence of rivers and lakes that glide between Lake Awesome and Lake Huron. The staff picked up seven new species, together with Black-crowned Night time-Heron, Sedge Wren, Virginia Rail, and Black Tern. This introduced their overall to 164 species, one shy of Iliff’s best-case situation—regardless of lacking some “simple” species similar to Blue-headed Vireo and Belted Kingfisher. View the Crew Chippewa go back and forth file.**
“We set our objective at 150, and would had been glad to overcome that,” mentioned Marshall. “To get this with regards to 165…we’re overjoyed.”
Making Connections in The Windy Town

Whilst Crew Chippewa traveled greater than 100 miles exploring the Higher Peninsula, Crew Chicago had a extra compact direction, however lined spectacular distances on foot. One staff member logged round 36,000 steps—a minimum of 14 miles. And just like the birds, additionally they had many extra automobiles, structures, and other people to take care of whilst in quest of out the best websites throughout the Windy Town.
The Chicago staff were given a good previous get started than their Michigan opposite numbers. It used to be round 2:30 a.m. when the staff recognized their first hen—a Mallard flying over Eggers Grove Wooded area Maintain, a small strip of preserved wooded area at the east facet of town. That used to be adopted in a while after through the ringing wheet-wheet of a Solitary Sandpiper.
Crew Captain Jenna Curtis used to be joined through fellow Cornell Lab group of workers Christine Audette, Nick Butts, John Garrett, and Alexis Falise. Due to a brand new nomination procedure that unfolded the risk to be part of Crew Sapsucker to all Cornell Lab group of workers, the Chicago contingent incorporated 3 participants who had by no means undertaken a large day. Falise added dozens of latest species to her lifestyles listing over the process the Large Day and the scouting that preceded it.


“It used to be only a blast. The adrenaline used to be so prime, on the finish of the day I didn’t wish to forestall. I don’t assume I’ve come down but!” Falise mentioned. Her favourite a part of Large Day used to be a noon seek advice from to Large Marsh, a 300-acre wetland at the Southeast Facet with miles of trails. The staff attached with group of workers and guests, or even stored a couple of steps through birding on motorcycles they picked up by the use of Divvy, Chicago’s bikeshare program. “I beloved the twin nature of that position,” Falise mentioned. “How they inspire birding in conjunction with different leisure alternatives for the encompassing neighborhoods.”
Within the predawn hours, the staff discovered birds like Virginia Rail and Sora calling from marshes and Semipalmated Plover, Noticed Sandpiper, and Dunlin dimly visual in a shallow pond in the back of a chainlink fence.
After some transient breaks within the birding to benefit from the revved up aurora borealis, the staff greeted first light on the premier birding spot within the town: Montrose Level Chook Sanctuary.



Montrose Level juts out into Lake Michigan proper from the center of town: an oasis of inexperienced bushes and grassy dunes simply north of the treacherous canyons of glass, concrete, and lighting of the middle of town. Recognized for its breeding endangered Piping Plovers, and a “magic hedge” that pulls weary migrants within the spring and fall, Montrose Level has noticed 273 species recorded within the month of Would possibly, consistent with eBird.
Over the process the early morning, the staff ticked off 20 species of warblers, together with a making a song Cerulean Warbler, one of the vital rarest warblers east of the Rockies. They tallied an excellent 79 species overall on the website.
The following a part of the plan used to be to move inland to forested remnants like Labagh Woods, the place they picked up their most effective White-breasted Nuthatch (a species overlooked through Crew Chippewa) and Furry Woodpecker. Via 11 a.m. their species overall had handed the century mark. Whilst the staff in Michigan noticed a number of dozen extra species than the Chicago staff, there have been greater than 30 species that the Chicago staff picked up that the Michigan staff didn’t, together with not unusual birds like Downy Woodpecker and Belted Kingfisher, plus some a laugh surprises like Cerulean Warbler and Olive-sided Flycatcher.

Then got here an laborious, 16-mile crosstown power to Washington Park after which directly to further hotspots round Calumet Lake. At a website known as Park 566 they scoured 70 acres of reclaimed grassland so as to add Sedge Wren, Japanese Meadowlark, and Box Sparrow. It used to be John Garrett’s favourite forestall of the day: “[Park 566] could be very other from any place else throughout the town—restored grasslands however like proper alongside the threshold of the lake,” he mentioned. “I truly beloved being there within the night with exhibiting woodcocks and nighthawks in combination all making their buzzy sounds.”



Different afternoon highlights incorporated an sudden pair of Eurasian Collared-Doves that the staff spied whilst crawling thru downtown site visitors, and a marvel Crimson-shouldered Hawk that they noticed in an commercial canal the place they’d been hoping to search out some Horned Grebes.
As Large Day 2024 wound down, the staff made a forestall on the Chicago establishment Portillo’s for a night power spice up within the type of scorching canine and cheese fries. Their final new species for the day used to be at Park 566, a trio of Commonplace Nighthawks within the darkening sky. Over the process 20 hours they’d filed 33 eBird checklists. View the Crew Chicago go back and forth file.
Reflecting on their day discovering birds in a spot the place human alterations to habitat are unavoidable, Jenna Curtis spotted a connecting thread for most of the preferrred websites: “Such a lot of of the puts we visited was commercial wastelands or effluent flows and ponds or dumps, or outdated touchdown strip or airfield,” she mentioned. “They’ve all been transformed again into herbal habitats for essentially the most section. That’s one thing that’s truly particular to enjoy…seeing all of those spaces being now preserved and restored for local flora and fauna.”