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Archive for May, 2011

A remarkable transformation has occurred: the barren, earthy browns and greys of the landscape surrounding Brockway Mountain has become an ocean of green that touches the dividing lakeline of Superior.  Even more remarkable is how swiftly those subtle tree buds became a profusion of foliage in only a matter of days, turning on its head that old joke about the boredom of watching grass grow.  Yes, Spring is anything but boring!  The planet’s life force at this time of year is apparent to even the most hardened indoor denizens, who would be successful in ignoring the ebb and flow of avian migration other times of the year.  But it’s hard to slight the uplifting changes to that “uncivilized” world that hugs the more tamed landscapes we dwell in, especially after growing accustomed to a melancholy stillness.  I think it is a welcome change, even if you love winter like I do.

Early morning temperatures still routinely hover a few degrees above the freezing point, although early afternoon temperatures now regularly climb into the 60s (and even the 70s).  To experience a temperature swing on the mountain of 30+ degrees in an eight hour period is still a small shock to my system, and I now find myself unsure of just how warmly I should dress for the day.  This should get easier as we close in on the Summer Solstice.  (Or not?)

Hawk flights remain strong, and new songbird species seem to arrive with each passing front.  The contrast from the first weeks of the count in March/April is simply stunning, and with Spring coming so late to the Mouth of the Wolf, I feel I’m no longer in any position to predict how much longer we can expect good flights from atop Brockway.  Even suboptimal winds seem to bring enough raptors to stave off empty binocular scans and navel gazing. (And this is definitely A Good Thing, as Martha Stewart used to say.)  And I now regularly park myself behind one of the stone barriers near West Bluff for a few minutes at a time to listen for songbirds in the valley between Brockway & Rocky Ridge, which functions as much as an acoustic amplifier for faint sounds as it serves as a wind block for the vibrant life taking shelter in the trees below.

In any case, the migration’s still got juice in it.  Hopefully you do, too!  More soon . . .

Pausing for Thought Atop Brockway,
Arthur

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Broad-winged Hawk

There was just a spectacular hawk flight on May 5th at Brockway Mountain. We tallied in 2528 east-bound raptors, as well as 123 Common Loons. 15 Bohemian Waxwings were nice to see and getting a touch on the late side for them to still be around.

Raptor-wise the highlights were 2 SWAINSON’S HAWKS (1 light morph and 1 dark morph), 3 dark-morph “western” Red-tails and the season’s 2nd(!) near full albino Red-tail. Of course the 1600+ Broad-winged Hawks were pretty awesome too.

dark morph Swainson's Hawk

The numbers from the day-
Turkey Vulture- 79
Osprey- 4
Bald Eagle- 27
Northern Harrier- 4
Sharp-shinned Hawk- 614
Broad-winged Hawk- 1643
SWAINSON’S HAWK- 2 (1 light juvie, 1 dark adult)
Red-tailed Hawk- 108 (including 3 dark morphs, and 1 near complete albino bird)
Rough-legged Hawk- 16
Golden Eagle- 1
American Kestrel- 27
Merlin- 1
Peregrine Falcon- 2

partial albino Red-tailed Hawk

a dark morph "Western" Red-tailed Hawk

Common Loon

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A Blistering Revival!

The results lately are dramatic.

If there was any doubt this season about Brockway’s importance as a springtime watchsite, May 5 should help put it to pasture: 2500 birds, 13 species of raptors.  Yes, that’s a single day’s count!  What’s even more surprising is that the full week to follow maintained a break-neck pace, with southerly winds ushering a steady stream of migrants into the tip of the Keweenaw.  I’ll allow Skye Haas the opportunity to personally report on that “big day”, but it’s worth noting that the week of May 5 thru May 11 accounts for almost 71% of the season’s total of 7584 birds till this point (with another month still to go!), which is amazing when you consider the count season began March 15.  Of course, Broad-winged Hawk and Sharp-shinned Hawk pad our totals this time of year, and even compared to these birds which move as if rushing to pack into a Tokyo subway car (those of you who’ve been to Japan will know what I’m talking about!), our less numerous migrants (e.g., Rough-legged Hawk) are every bit as important to our study of Keweenaw migration.  It is for this reason we begin the count as early as we do, although (admittedly) we were a little surprised at how slowly the season began.  And it’s easy to begin thinking the birds didn’t start moving en masse until the beginning of May; seasonal variation is reason enough for why it is difficult to anticipate when the bulk of a season’s migration will take place at any given locale.  But the variation each year is also why studying hawk migrations never becomes boring.  We hope you agree!

In any case, I wanted you, Dear Reader, to know that things have been just ducky, and that you have not been forgotten!  Thank you, as always, for your support, and I hope to see you soon on the mountain!  The weather is just fine, and the birds, as always, are magnificent!

Developing a binocular callous on Brockway,
Arthur

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May 1′s Sharp-shinned Hawk flight seemed to pick right up from April 30′s strong showing, but strangely, in the opposite direction!  Where we had 185 eastbound birds and only 13 westbound birds on Saturday,  Sunday brought only 30 eastbound birds and 131 westbound birds; that Sunday westbound count  is nearly 71% of the Saturday eastbound count!  Wow!  With brisk southerly winds both days pushing migrants of all stripes to the northern end of the peninsula, the traditional notion that these westbound birds are indeed many of the same birds observed flowing east past the watchsite earlier seems to hold true.  But without hard data to fall back on (e.g., that produced by other surveys conducted simultaneously in the peninsula), I can do nothing more than speculate.  Fascinating!

Wishing for better weather at Brockway,
Arthur

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A bleak sky?  For sure!  Today, we spent the day shielding our eyes from the wind-blown particles of eroded conglomerate blown off the ridge face by nearly constant 35+ mph southeasterly winds.  My usually sturdy scope tripod was blown to the ground with ease, and it seemed as if I was routinely chasing down an article of clothing or making sure my clipboard wasn’t blown off the mountain.  Even after a shower, I’m still finding bitsies of stone in my hair.  Yes, this was an interesting day!

NWS forecasts suggested April 30 would have all the makings of an exceptional flight, and we came to work anticipating numerous “kettles” of Broad-winged Hawk high over our heads.  But birds particularly reliant on soaring flight were conspicuously absent in number today.  Those BWs would have none of these winds, and we were treated to trickle of only 15 birds that came in low over the treetops in ones and twos.  No kettles.

However, Sharp-shinned Hawk and other powered-fliers (including Peregrine Falcon) were out in force.  As cloud cover thickened and progressively invaded the sky, we were treated to a nearly constant movement of birds within easy unassisted view of West Bluff low in the valley between Brockway and Rocky Ridge.  This flight-line was probably a blessing in disguise; our binoculars were under the spell of an unyielding tremor from those winds, and not particularly useful for viewing at distance.  In any case, only a few daring fliers ventured any appreciable height above the treeline, and nearly all our observations were unexpected flybys that required constant vigilance.  No doubt we missed some birds without the benefit of our optics, but I think we did pretty good job under the circumstances to milk the day for what it was worth!  This was hardly anyone’s ideal spring hawkwatching day, and I’d like thank Karen Lund, in particular, for choosing to spend the day on the ridge with me in conditions that left us both temporarily hard of hearing and a little worn around the edges.  (I suspect we’ll both sleep well this evening!)

The final totals for this unusual day were: 37 Turkey Vulture, 2 Osprey, 9 Bald Eagle, 7 Northern Harrier, 185 Sharp-shinned Hawk, 1 Northern Goshawk, 15 Broad-winged Hawk, 6 Red-tailed Hawk, 10 Rough-legged Hawk, 17 American Kestrel, 4 Peregrine Falcon.

Is there a lesson to be learned in this?  Yes:  You’ve got to be totally nuts to be a hawk counter!  Fortunately, I already knew that, and I don’t mind being a little crazy so long as I’m having a heck of a lot of fun and making fine friends and memories.  How blessed I am to be in exactly that position right here in Copper Harbor!

With luck, maybe tomorrow (May 1) might bear witness to (much) friendlier weather and some of those BWs we were hoping for today.

Marveling at bleak skies over Brockway,
Arthur

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