A Northwoods Companion for 5/9-22, 2025 by John Bates
Great Backyard Bird Count – A Great Success!
Cornell’s Great Backyard Bird Count was held Feb. 14-17, and wow, a bunch of worldwide records were set! Some 8,078 bird species were found, representing about 74% of the 10,960 species on the planet. This was 158 more than were found in 2024.
In North America, 792 species were recorded in Mexico, 670 in the U.S. and 247 in Canada, though those totals were dwarfed by species reported in South America, including the 1,376 in Colombia, 1,137 in Ecuador and 1,094 in Brazil.
Outside the Western Hemisphere, India was the top country with 1,085 species, while Kenya led all countries in Africa with 700.
Closer to home, people in 71 of Wisconsin's 72 counties participated in this year's GBBC and reported 128 species (Vilas County folks found 24 species, Iron County 18).
Worldwide, an estimated 838,113 people took part, which is a remarkable statistic in and of itself and amply demonstrates the immense popularity of bird watching.
The largest flock of birds recorded was 500,000 European starlings in England. In California, a flock of 350,000 common murres were seen off the Pacific coast, and about 200,000 greater and lesser flamingos were reported at a site in Tanzania – can you imagine what that must have looked like?
Planting for Hummingbirds
Hummers usually arrive right around Mother’s Day, so get your feeders out if you haven’t already. And rather than just providing sugar water, consider planting species that provide real nectar over the long run like butterfly milkweed (Asclepias tuberosa), bee balm (Monarda), cardinal flower (Lobelia cardinalis), columbine (Aquilegia canadensis), and jewelweed (Impatiens capensis).
Sightings – FOYs (First of Year)
4/18: FOY yellow-rumped warblers coming to our feeders, which is unusual. Tree swallows on Powell Marsh, but no insects hatching. Frog Lake opened up and is ice-free.
yellow-rumped warbler, photo by Bev Engstrom |
4/19: Harris’s sparrow at our feeders in Manitowish.
4/21: FOY brown thrasher below our feeders. Pied-billed grebes out on Powell.
4/23: White-throated sparrows returned to our feeders. And it was Mary and my 46th anniversary! We hiked a seven-mile section of the North Country Trail in celebration.
4/24: FOY woodcocks, and the first female red-winged blackbirds appeared. They’re usually two to three weeks later than the males.
4/26: FOY American bittern on Powell Marsh.
4/27: FOY pine warbler.
4/28: FOY swamp sparrows, and Wilson’s snipes are now winnowing over our house.
Mosquito Time is Coming!
Enjoy, really and truly enjoy, this last week or so of mosquito-free hiking. The first big hatch usually occurs around May 20, but it depends on the weather – warm and wet as we all know brings them out quicker.
Maple Syrup Season
Whenever I need further education in the art and science of maple sugaring, I call my friend and internationally-known forester Bob Simeone who has been making maple syrup for 38 years near Land O’Lakes. I wanted to confirm with him that this was a good year for syrup given our plethora of above freezing days and below freezing nights, which is the general rule for a robust season of sap.
Well, I was partially right. It was a good season for quantity, but a poor season for quality.
I hadn’t accounted for two major factors. First, Bob told me, you have to remember that the previous summer, defined as mid-May to the end of July, determines in large part the sugar content of the sap for the following spring. This is the period when sugar maples have leafed out and are doing their maximum photosynthesizing (PHS).
You may remember early summer last year was often wet, cool, and cloudy, conditions less conducive for PHS than warm, sunny, and dry. The better the PHS, Bob said, the higher the sugar content in the sap the following spring.
Given this, Bob predicted that a lower sugar content would be the case this spring, and he was right on the money. Sugar content in the first spring run of sap is usually from 3.5 to 3.7%, which makes for a light, amber colored, and mild flavored syrup. As the weather slowly warms, the sap runs decline in sugar content until they reach 2%, at which point it’s usually close to 60° and Bob pulls his taps.
This spring, the first sap run occurred very early, the second week of March when our daytime temps hit 60° for several weeks. Bob tapped then, and his first run of sap was abundant, but low in sugar – only 2.5% – and thus the resulting syrup was dark and strong-flavored from the get-go.
Bob made 10 gallons of syrup in this first run, and by the next run, the sugar content had dropped to 1.5%, much too low to continue the effort of boiling sap, so Bob pulled his taps. Bob usually makes 40 gallons in a good year, so by his standards, this was a poor year indeed.
Bob noted, however, that lots of syrup makers did not pull their taps, and the sap kept running, but made for a very dark and strong-flavored syrup.
And that’s where the second factor has to be taken into account, and that’s the magic number of 60°, a point where the trees begin to metabolize leaves, and the sap becomes sulfur smelling. Why 60° is the magic number, Bob doesn’t know, but he does know that it’s a real thing, and that it always means the end of the season.
The problem with this spring season is we began early on with 60° temps, but then we reverted to a more normal spring with fluctuating temps between 20° or so at night and 40° or so during the day. That spell of 60° contributed to the conversion of sap to a lower sugar content and the resulting dark syrup.
Bottom line? For those who kept tapping, this was a good year for the quantity of sap, but the sap boiled down to a low quality syrup. Quantity vs. quality – an issue in a thousand other things, too.
Spring Flowers!
By the time you read this, spring ephemerals should be in full riot. However, as of this writing on May 1, flowers are still just poking through.
4/23: Pussy willows flowering.
4/27: Silver maples flowering.
4/28: Male and female flowers on hazelnut and tag alders. Quaking aspen flowering.
4/29: Trailing arbutus and round-lobed hepatica were just beginning to flower in Frog Lake and Pines SNA.
Trailing arbutus, photo by Mary Burns |
FE Returns!
I wrote in my last column about ABJ, the world’s oldest known banded loon as a chick, returning to the Seney National Wildlife Refuge in the U.P. on April 11. At that time, however, his female mate for much of his life, “Fe,” had not returned.
Well, refuge researches announced on 4/29 that she had arrived in Seney, settling upon I Pool, her Seney home since splitting from ABJ in 2022. Fe was first color-marked in 1990 when she was at least four years old, and thus will be at least 39 this summer. Although ABJ is the eldest common loon of known age, turning exactly 38 this June, Fe could well be 42 or 47, and occupies the pedestal of the most senior documented member of her species.
Last year, Fe and an unbanded male produced two offspring, but, unusually, both perished within weeks. The long-term average for chick survivorship among all refuge pairs is 82%, and during their quarter-century partnership ABJ and Fe fledged 91% of their young.
Meanwhile, ABJ has paired with “Aye-Aye.” Like Fe, she was originally color-marked as a successful adult mother in 2018 (thus she was at least 4 years old at the time), making Aye-Aye at least 11 this summer.
ABJ has never sired young with anyone but Fe, so we’ll see if this changes for he and Aye-Aye in 2025.
Frog Count
Mary and I conducted our first DNR frog count of the year on 4/26, an annual survey we began back in 1988 on 10 sites in western Vilas County. We survey the sites three times, once between April 8-30, then May 20-June 5, and finally between July 1-15.
This spring the surprise was the number of wood frogs we heard. Six of the 10 sites had wood frogs “quacking” right along with the usual chaos of spring peepers.
To identify wood frogs by appearance, look for their characteristic dark triangular-shaped “mask” that extends from the tip of the snout back through the eyes, accented by a white line along the upper lip. Their dorsal (back) color can vary from tan to brown to gray to bronze to even pink, so look for these facial features to identify them.
The females lay 500-800 eggs in masses in the shallow waters of temporary vernal ponds or semipermanent wetlands. These sites provide enough water for larval development, but don’t support overwintering fish or other amphibians that prey on the eggs or larvae.
The larvae hatch out in 12 to 15 days, undergo a rapid metamorphosis in May to late June (45 to 60 days), and then hop out of the water into woodlands where they live for the rest of the summer.
As the name suggests, wood frogs need woodlands with nearby wetlands for breeding. One study showed that wood frogs aren’t found in landscapes with less than 30% forest cover.
They’re the most northern frog in North America, even breeding north of the Arctic Circle, with a range extending from the Pacific coast of Alaska to the Atlantic coast of Quebec, and south into the Appalachian Mountains.
Their “singing” lasts only a couple weeks, then that’s the last you’ll hear of them until next spring. They may in fact have wrapped up their singing by the time you’re reading this. If not, this is your last chance to hear them in 2025 – get out there!
Thought for the Week
“It is not enough . . . to think of different species merely as potential ‘resources’ to be exploited, while overlooking the fact that they have value in themselves. Each year sees the disappearance of thousands of plant and animal species which we will never know, which our children will never see, because they have been lost forever. The great majority become extinct for reasons related to human activity. Because of us, thousands of species will no longer give glory to God by their very existence, nor convey their message to us. We have no such right.” - Pope Francis
Please share your outdoor sightings and thoughts: e-mail me at johnbates2828@gmail.com, call 715-476-2828, snail-mail at 4245N State Highway 47, Mercer, WI, or see my blog at www.manitowishriver.blogspot.com