Tuesday, April 14, 2015

NWA 4/17/15

A Northwoods Almanac for April 17 – 30, 2015 

Sightings – Snowy Owl, Snow Buntings, Woodcocks, Eagles Eating Snails, More!
3/31: Peggy Grinvalsky photographed a snowy owl on Lake Minocqua. Her comment, “Wowowowowow!!!! Snowy owl on Lake Minocqua across from Savemore at 1:15 today . . . nobody even noticed!!!!! Been looking for one for at least 40 years. Great warm sunny day to just watch and be in awe.”  
3/31: Sarah Krembs reported seeing a flock of snow buntings north of Rhinelander on Highway 47. They were undoubtedly males given that male snow buntings return to their high arctic breeding grounds in early April, even though the temperature often dips to -22°, and the landscape remains snow-covered. The females, the apparently brighter of the genders, won’t arrive for another four to six weeks, when days are warming and the snow is beginning to melt.
Sarah also noted: “I went out for the nightly peanut run for the flying squirrels, and I heard a constant repeated sort of low whistling noise up in the trees far in the backyard. Whoa, ho! A saw-whet owl.  I love it. I went from a couple years ago listening to various owl sounds on a disc thinking, "Never, ever heard it," to now being outside at the right time of the evening to hear it in our own backyard. Incredible!”
Listen after dusk for the male saw-whets wooing females – their “song” sounds like the continual dinging that a commercial truck makes when it’s backing up.
4/1: Bill McCutchin reported a truly unique sighting: “We have four eagles on the [Trout] river behind our house. There is one mature, one almost mature and two immature all hanging around together. They are staying on the edge of the ice and appear to be pulling up wild rice and eating that. They are wading in 2 to 3 inches of water on the wild rice flats. Is this normal?” 
I had never heard of eagles eating wild rice, so I emailed Ron Eckstein, retired DNR wildlife biologist and an eagle expert. His response was this: “There is no record of eagles eating any grain including wild rice. They do pull aquatic grasses and use the grass to line their nests. So, actually eating wild rice seeds or wild rice stems is unknown to science.” 
            The next day, Bill responded saying, “The strange part about the eagles was they also used their feet to break the thin ice, then moved the ice with one foot, and then pulled up a clump of rice and swallowed it. It looked like spaghetti going down.”
The following day, 4/3, Bill sent another email this time with a possible answer to the mystery: “I was down by the pier and noticed all kinds of big snails (1”) all over in the shallows in the mud. Were they maybe eating these and the rice stems came with the lunch?”
Ron responded, saying, “The snails are likely the answer! This is great to document eagles eating snails.”
Who would have thought eagles were ingenious enough to pull up wild rice stalks in order to eat the snails clinging to them? Just another example of the remarkable adaptability and intelligence of wildlife.                                
4/1: Mary, Callie, and I counted ten sandhill cranes on Powell Marsh.
4/2: Ed Marshall sent a photo of a first-of-the-year (FOY) woodcock in the spring snow, noting: “This guy showed up outside my library window.” Woodcock probe the soil with their long beaks for invertebrates, so one wonders how difficult it was finding food while we still had snow on the ground.
4/3: We had a northern shrike show up at our feeders, and later that day, saw another shrike on Powell Marsh. We hadn’t seen a shrike all winter!
4/5: On a less happy note, cowbirds appeared at our feeders, while starlings had arrived on 4/2.
4/6: Cherie Smith in Lake Tomahawk sent a photo of a hermit thrush that was eating suet at one of her feeders. This is a FOY for hermit thrushes in our area, but also is a great sighting, because hermit thrushes simply aren’t known for coming to suet. Hunger makes for creative responses I guess.
She also noted: “Last year in March when the weather was really bad we had a robin come in. I started putting out mealworms for him and pretty soon he found them. If we didn't get outside fast enough for him, he'd perch on this log by the house and just stare in the window until we spotted him. He actually started running towards us when we'd go out. I never tried to tame him enough to eat out of our hand, but he'd stand about a foot away waiting for us to toss the worms to him. Then later on in the summer, he brought the "wife and kids" in for a treat. Well, to make a long story longer . . . darn if he didn't show up a few days ago. I wasn't sure it was the same robin, but when I went outside and called "Papa" (my nickname for him), he came running for the mealworms I had. He's quite the little beggar. We have two that we are feeding now, and I'm pretty sure the other one is his son. He does do his own hunting, but if he gets the chance he'd rather have the easy meal!!”
4/7: Don and Greta Janssen reported hearing cardinals singing at their home for the first time this year. A pair of cardinals have nested at the Janssen’s for quite a few years now.
4/7: A FOY fox sparrow appeared at our feeders in Manitowish.
4/10: Sarah Krembs sent a photo of a couple of trumpeter swans preening at Powell Marsh.
4/12: Mary, Callie, and I saw our FOY northern flicker, a flock of them in fact, as well as our FOY morning cloak butterfly, and one species of the “comma” butterflies, all of which overwinter here by hibernating as adults, and then emerge typically in early April.
4/13: Linda Johnson on the Tomahawk River reported the FOY eastern phoebe for this area.
4/13: Dan Carney in Hazelhurst spotted the FOY yellow-rumped warbler for our area.
            4/14: We had a pair of FOY yellow-bellied sapsuckers feeding on aspen flowers in our yard.

Loons Slow in Returning
Ice-out has come rather quickly this spring. Many smaller lakes were ice-free as of 4/10 or 4/11, which is about a week earlier than average. What I found unusual about the open water was the utter lack of common loons, at least on the lakes that I observed. Typically loons appear on their territorial lakes the very same day as ice-out, often before the ice is even completely off the lake. That has not been the case so much this spring.
I suspect the reason why is quite simple – the loons were just as surprised by the sudden 60° temperatures as we were. Their experience, particularly the last two springs, likely spurred a conservative approach to completing their migration into northern Wisconsin, a “I’ve been burned (or perhaps frozen) before by going up there too soon.”
Walter Piper, a long-time loon researcher in our area, had this to say in his blog (www.loonproject.org) about the unusually slow appearance of loons so far:
“Why would territory owners leave their lakes undefended, especially at a time when many adult loons without territories are on the prowl, anxious to seize any vacant lake? The answer is simple. Weather changes rapidly. As migrants that must fly hundreds of miles between the wintering and breeding grounds, loons face a meteorological puzzle. If they molt their feathers and migrate too early to the breeding grounds, they will encounter wintry conditions and uninhabitable frozen lakes on arrival, struggle to find enough food on open water along rivers, and ultimately settle on their breeding lake in poor condition. They will then be at risk for losing their territory to a fitter, stronger usurper who times his or her arrival better and remains in better condition. If, on the other hand, they wait too long to migrate, they might return to find that a squatter established on their territory. In such cases, a territory owner would have to battle the squatter to reassert itself as owner. In short, gauging when to return to the lake you own is an inexact business for a territorial loon.”

The Great Wisconsin Birdathon!
What is a Birdathon? It's kind of a Spot-a-thon with birds, a grassroots, community event that directly benefits bird protection projects in Wisconsin. Teams of birders from all over the state have 24 hours to find as many birds as they can. Our Birdathon team, the Northern Highlands team, will spend most of our 24-hour period in Iron, Vilas, and Oneida counties with the goals of seeing 100 bird species or more and raising at least $1000. Funds we raise will support eight statewide programs that meet the year-round needs of Wisconsin’s birds, programs like monitoring and managing Kirtland’s warblers or reintroducing whooping cranes.
I’ve never done one of these before, nor has anyone on our team, but the cause is really a good one. You can help us help Wisconsin birds by pledging or donating to the Northern Highlands team. Most folks contribute a set amount, or they pledge a quarter per species, whatever feels good to you. To donate online, go to WIBirdathon.org, click on Donate to Someone You Know, find my name, and make a tax-deductible donation. Or find our signature team, and do the same.
The Great Wisconsin Birdathon started in 2012 as a joint effort between the Natural Resources Foundation of Wisconsin, the Wisconsin Society for Ornithology, and the Wisconsin Bird Conservation Initiative (WBCI). In 2014, 217 birders, 55 teams, and 745 donors together raised $56,000 to support seven bird conservation projects in Wisconsin. We’re hoping to make that number go higher.

Celestial Events
            The peak for the Lyrid meteor shower occurs in the predawn of 4/23. The Lyrids average about 10-20 meteors per hour.
            On 4/25 and 4/26, look for Jupiter near the waxing gibbous moon.
And, if you haven’t noticed, it’s staying light a lot later. By 4/29, we’ll hit 14 hours of daylight.



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