Butterfly another buckeye popular in fall

Butterfly another buckeye popular in fall

Columbus Dispatch
October 18, 2015

NATURE
Jim McCormac

Anything with buckeye in the name is generally popular in these parts. Thus, the common buckeye (Junonia coenia) should indeed be an esteemed butterfly.

No matter what the name, the buckeye is a beautiful bug. Its wings are like an entomological artist’s canvas, painted by a master. Buckeye-shaped spheres rimmed with ocher and tinged with violet and azure accent a brown and orange backdrop. Dashes, bars and wavy lines create striking points of interest.

A casual observer probably wouldn’t notice the butterfly’s ornate detail. Buckeyes dash low over the ground with great rapidity. On the wing, all ablur, they look like little more than a moth on steroids.

But when one alights to feast on flower nectar — whoa! Game on, and out come the cameras. A more striking lepidopteran subject could hardly be found.

This isn’t the first time I’ve written about these flashy insects. But a special award merits a repeat performance. In August, an image of a common buckeye was selected to grace the 2016 edition of the Ohio Wildlife Legacy Stamp.

Having one’s photo judged worthy to grace the stamp is a high honor, and Alice Kahn’s fine photo that made the cut, besting 170 other entries. Kahn, of Oxford, photographed the butterfly on the snowy blossoms of white snakeroot.

Most buckeyes in Ohio are immigrants from farther south. They invade northern latitudes in late summer and fall, sometimes in big numbers. When abundant, the butterflies can appearanywhere, even in weedy urban lots.

Other years, such as this one, buckeye numbers are lean. I had seen very few until last weekend, when I noticed several dozen in Auglaize County. That’s where I made the accompanying image. The buckeye is extracting nectar from the flowers of white heath aster. This abundant native plant is a vital late-fall source of energy for butterflies.

At least some northwardly mobile buckeyes attempt to reproduce here. I’ve encountered their beautiful caterpillars several times on various species of figworts, which are the butterfly’s host plants.

Whether the chrysalises survive the winter is another question. Most buckeyes found here are ones that have recolonized from farther south.

The aforementioned Ohio Wildlife Legacy Stamp is sponsored by the Ohio Division of Wildlife and is in its seventh year. Having one’s photography adorn the stamp has become quite an honor.
Previous stamps depicted the eastern bluebird, the painted turtle and the eastern amberwing dragonfly, among other interesting subjects.

Ninety-three percent of the stamp’s $15 purchase price is invested into the Wildlife Diversity Fund. Monies go to support educational material such as the free natural history booklets provided by the Division of Wildlife. Other stamp-supported projects include endangered species research, restoration of rare species and habitat acquisition.

The 2016 Ohio Wildlife Legacy Stampfeaturing Kahn’s common buckeye photo will go on sale on March 1. For more information, visit www.wildlife.ohiodnr.gov.

Naturalist Jim McCormac writes a column for The Dispatch the first, third and fifth Sundays of the month.

Shooting shorebirds (with camera)

Fish hatcheries can be birding hotspots, and the St. Marys Fish Hatchery in Auglaize County has been hopping lately. Several of the ponds there have been drawn down to mudflats, attracting lots of shorebirds. I headed over last Sunday to see what I could find, and attempt to make some images. Some of my photos from this foray are in the previous post.

The St. Marys Fish Hatchery lies just a stone's throw from the eastern shore of Grand Lake St. Marys. At the time of its construction as a canal feeder lake in the 1830-40's, this was the largest manmade lake in the world. Unfortunately, its construction drowned what must have been a spectacular wet prairie and swamp forest. But the lake, feeble substitute as it may be for the original prairies and woodlands, quickly turned into a bonanza for water birds. In 1970 Clarence Clark and James Sipe published their Birds of the Lake St. Marys Area, which documented an impressive cast of avifauna. The fish hatchery, which launched operations in 1913, provided many of these records. It attracts noteworthy birds to this day.

There are 23 ponds covering 43 acres at the hatchery, and they're normally full of water and fish. But from time to time, it becomes necessary to draw them down, such as the pond in the foreground. It's here where I spent most of my time last Sunday, and where all of the photos that follow were made.

The day prior, I had stopped at a drawn-down pond near Killbuck Wildlife Area in Wayne County, on my way back from the Lorain area. The site was attracting lots of shorebirds. As soon as I saw the situation, I knew it would be pretty much a bust for photography. The birds were too distant, and/or were in terrible light and it wasn't possible to get into a suitable situation lightwise. No matter, I stayed for several hours and enjoyed studying the birds and their interactions.

I know this fish hatchery well, though, and had a strong idea as to how I could view the birds. Departing well before dawn, I arrived at the hatchery before the sun poked above the horizon. Taking my camera rig, I holed up at the base of that cement water control structure on the side of the pond, sitting on some steps right up against the structure's wall. Positioning the tripod and camera comfortably in front of me, I waited for the sun to appear.

One of the tricks to obtaining really sharp bird photos is to get yourself close to the action. Without spooking the birds or otherwise being an annoyance. While I know the birds noticed me, my quiet presence as an extension of the water control structure did not put them off in the least. Even wary loudmouths such as Killdeer were coming within 15-20 feet of me. For the three+ hours I remained in this spot, birds were usually close at hand, unless a car or people on the road above spooked them. The light was flawless - beautiful golden early morning light coming right over my shoulder. All of the bird images in this post were made with the amazing Canon 7D Mark II, and Canon's 500mm f/4 telephoto lens. No flash was used, and as almost always I used auto white balance and evaluative metering. All images were shot with the camera in manual mode.

Note how the Killdeer's head is turned slightly towards me. That's a sweet spot for bird posture - much better than if it was looking slightly away, or even straight ahead. The settings for this photo were f/6.3; 1/1250; ISO 640. Exposure compensation was dialed down -1/3rd of a stop.

I don't like shooting over ISO 800, generally, if it can be helped. The lower the ISO number, the cleaner (less grainy or "noisy") the image. The 7D holds up quite well until about 800 or so. Even at higher ISO's its OK if you don't have to crop much. If you're not familiar with exposure compensation and how to quickly alter that on your camera, study up (Google is your friend). When left in the neutral exposure position (0 compensation), you're almost certain to overexpose bright parts, such as the white of this Killdeer's underbelly.

This Lesser Yellowlegs and a few of its brethren were so confiding that they approached TOO close for photos from time to time. Yellowlegs are exquisite sandpipers and very photogenic. I made many keepers, but liked this shot of the bird as it canted forward, scanning the mud for tiny invertebrate life. Show yourself, create a disturbance, or otherwise be conspicuous and the yellowlegs will set about scolding you loudly, and alerting every other bird on the flats. Good luck with close range studies then.

f/6.3; 1/1600; ISO 400; -2/3rd stop exposure compensation. Notice that in spite of reducing exposure compensation another one-third stop, AND increasing the shutter speed over the settings of the previous photo, my ISO reading still dropped. That's because the sun is getting higher, and feeding more light to my position. When shooting birds, especially shorebirds, I usually want to keep the shutter speed fast to freeze movement. Especially as I was interested in trying for in-flight shots, and wanted to be ready when the opportunity arises.

At one point, this little Semipalmated Sandpiper nearly scrambled over my feet. I should have spent more time with it, but did not due to other nearby distractions that I was targeting. This image is OK, but the bird's posture doesn't lend itself well to a truly stunning photo. Nothing against the sandpiper - it's beautiful - it was my fault for not spending more time tracking it and awaiting an interesting pose.

Three major aids in shooting active birds: 1) AI Servo mode (in Canon-speak). This setting allows the camera to constantly remain focused on a moving object, as long as the shutter remains half-depressed. 2) Back-button focusing. The button marked with an asterisk (*) on the back of my camera sets focus and exposure, and is controlled with my right thumb. The only thing the shutter button up front does is fire the shutter. This is a MUCH better arrangement, especially for bird photography, and I thank Dane Adams for prodding me into this setup. I wouldn't go back. Google this up and read about it. 3) Burst mode. Almost an imperative for bird shooting. Set your camera to the fastest burst rate (number of images per second). The 7D Mark II can click off 10 a second, and obviously your odds of getting a great shot go up when engaging in such photographic carpet bombing.

The Semipalmated Sandpiper was shot at f/7.1; 1/2000; ISO 640; -2/3rd stop exposure compensation.

A striking White-rumped Sandpiper seems to ponder its reflection. This species was my primary target, and I wasn't disappointed. Rick Asamoto had reported a good-sized flock here prior, hence my trip. As many as 75 white-rumps were present during my stay, and as often as not they were in very close proximity. This is truly a feathered globetrotter. They breed in the highest reaches of the Alaskan and Canadian arctic. In an incredible journey, the white-rumps migrate all of the way to the Atlantic coast of southern South America, with many making it all of the way to Tierra del Fuego in southern Argentina. The animal in this photo is likely to travel 8-9,000 miles in its southward migration. Making it all the more remarkable is that it - and all of the others that turned up in Ohio this October - are juveniles. The adults have preceded them. Built-in GPS allows the youngsters to navigate unerringly from one end of the earth to the other, having never made the journey before, and with no parental guidance.

This image was made at f/7.1; 1/2000; ISO 800; -2/3rd stop exposure compensation.

A squadron of White-rumped Sandpipers settles onto the mudflat. While foraging on the flats, the birds scurry about like feathered mice, and perhaps to some - at least those ignorant of their amazing story - would not appear overly impressive. But in flight the birds are transformed. Long strong wings provide an impressive wing surface to body mass ratio, and the animals are swift, graceful, and direct. Some legs of the white-rumps' journey might last for three days aloft nonstop, and cover 4,500 miles. Fueling way stations such as this mudflat, that offer an abundance of fat and protein filled animal life, are imperative to their success.

Shooting flying birds is, needless to say, a bit trickier than a bird at rest. Especially when they are fast flyers prone to erratic jigs and jags. The idea is to smoothly track the bird or flock, ideally when they are far out, and keep them in your sights and in focus until they get into shooting range. Just as in skeet-shooting, smoothly depress the shutter (trigger) while all the while tracking the moving birds. This image was made at f/7.1; 1/2000; ISO 400; -2/3rd stop exposure compensation.

This White-rumped Sandpiper took a rare breather from its normally frenetic feeding, and sat for a minute looking around. For photographic purposes, its posture was sublime - facing slightly away, but obligingly looking back slightly over its shoulder towards the camera. By the time you read this, there's a good chance the bird will already be in South America.

This shot was made at f/6.3; 1/2000; ISO 640, -2/3rd stop exposure compensation.

After about three and a half hours frozen in place tucked up against the water control structure, it was time for a stretch and a look around the rest of the hatchery. When I circled back to the mudflat pond an hour and a half later, the pump had been activated and water was rushing over the flats. Back to the fish business, but there were several other drained ponds that hosted shorebirds. Nonetheless, my timing was fortuitous indeed, and as they say, the early bird gets the worm.

Hunting shorebirds

A Common Buckeye, Junonia coenia, nectars at the flowers of White Heath Aster, Symphyotrichum pilosum. There's nothing "common" about the appearance of this exotic-looking butterfly, and while the plant is abundant and sometimes derided as weedy, it is an important native late-season source of energy for butterflies and other pollinators. I made this image last Sunday at the St. Marys Fish Hatchery in Auglaize County, Ohio.

I haven't been letting grass grow under my feet of late, hence the scarcity of posts. Three recent and highly productive field days resulted in many sightings and images, though. I'm still sorting and cataloguing those, but present a few photos here.

This freshly molted male Red-winged Blackbird, many feathers still fringed with buff, felt the spirit of a late fall Indian Summer day and could not contain himself. I photographed him in the yellow glow of the final minutes before sunset at Killbuck Marsh Wildlife Area in Wayne County. He obligingly posed on a fruiting stalk of our native cattail, Typha latifolia.

A Turkey Vulture takes wing in western Ohio. Photographers are sometimes disappointed with their vulture images. As large as these birds are, they'd seem to be easy pickings with a camera. But vultures on the wing are often much further away than they appear, making it tough to get a crisp image. This animal and many of his compadres were feasting on dead fish in a freshly drained pond at the aforementioned St. Marys Fish Hatchery, and they permitted close approach.

A highlight of the fish hatchery foray was this stunning female Surf Scoter. Any of the three scoter species is rare away from Lake Erie in Ohio, and it's often not possible to get near enough to obtain imagery such as this. The scoter was quite confiding as it feasted on submergent aquatic vegetation in one of the ponds.

Shorebirds were my primary targets at the fish hatchery. Personnel there have temporarily drained several ponds, and their timing coincided nicely with the tail end of shorebird migration. This Lesser Yellowlegs was one of several that were present during my visit.

A squadron of White-rumped Sandpipers rockets by, low over a mudflat at the fish hatchery. It was this species I had, first and foremost, come to see. White-rumps are fascinating birds, and record - or near record - numbers have turned up in Ohio this October. Rarely will one get the chance to study this species as we have had this month, and I've tried to take full advantage of the unusual opportunity.

I spent several hours studying and photographing White-rumped Sandpipers last Sunday, only rarely turning the lens to other subjects. The little birds are exquisite in plumage, habits, and voice, and I clicked off more images than I care to admit.

Hopefully, if unexpected distractions don't crop up, I'll soon make a more detailed post about White-rumped Sandpipers. I'd like to share more images of these incredible birds, and some details about their amazing lives and travels. Also, perhaps, some tips on how to position oneself in such a way as to maximize study and photo opportunities, without bothering the birds.

Climbing Fern, Lygodium palmatum

Way back on August 13, I made a visit to Vinton County in southeastern Ohio, to visit my friend Ray Showman and his wife, Carol. The primary mission was to deliver a presentation to Carol's garden club, and that task was dealt with. But there was time for a field excursion into Vinton County's wildlands, and Ray and I hit some of the local hotspots.

One organism that I really wanted to revisit was a strange plant known as Climbing Fern, Lygodium palmatum. For as long as I can remember there has been a large station of this plant in a scruffy cutover woods not far outside of McArthur. Ray and I made our way there, and lo and behold - there was the fern. Vegetation succession has eliminated much of it - back when I first became acquainted with this spot the fern clambered over vast expanses, and suggested an out-of-control growth of Japanese Honeysuckle from afar. But the odd tangle of the odd fern persisted here and there.

In the photo above, we see the finely cleft fertile leaves of Climbing Fern, near the summit of the filamentous vining stems that scramble over other plants. Its support plant - at least one of them - is the noxious Japanese Honeysuckle, and supporting this beautiful fern is one of the better uses that I've seen for that invasive species.

This is what the ground below looked like. A vegetative tsunami of interesting hand-shaped leaves; the sterile foliage of the Climbing Fern. Their shape provides the plant's scientific name's specific epithet: palmatum (hand-like).

Here are both leaves together on an aerial stem. The narrowly lobed fertile leaves, which bear the indusia or spore cases, adorn the upper part of the twining stem. A few of the larger sterile leaves are below. All in all, a very showy climber well worthy of our attention and respect. It would seemingly make an excellent garden plant, but may be tough to grow, and it seems virtually unknown in the nursery trade.

Up until recently, Climbing Fern was a member of the strangely named Curly-grass family of ferns (Schizaeacaea. It has since been segregated into the Lygodiaceae). Only two species in these groups make it this far north: Climbing Fern (map), and the strange little Schizaea pusilla of the east coast and northeastern maritime regions. Ohio is on the edge of the Climbing Fern's range, and although it can be locally common, generally the fern occurs sparingly and locally in a handful of southeastern counties. The rest of the 35 or so species are tropical, and occur far to our south.

2015 Wetlands Summit: October 17, Dawes Arboretum

Cedar Bog, Champaign County. Perhaps the richest biological diversity in Ohio occurs in the fens of Cedar Bog. Wetlands in general fuel major spikes in biodiversity.

Mark your calendar for Saturday, October 17. That's the date of the Ohio Wetlands Association's annual Wetlands Summit. The event takes place at the beautiful Dawes Arboretum, which is a stone's throw from Newark and easy to reach from nearly anywhere. Complete details and registration information can be found RIGHT HERE.

Ohio has lost about 90% of the wetlands that were here when the first European settlers arrived. Prioritizing their protection, strategizing effective ways to save and restore them, and educating people about wetland values should be of paramount importance. The Ohio Wetlands Association excels at this mission.

A star-studded cast of speakers will make for a very informative and entertaining day, and there should be time to visit some of the wetlands that were restored in recent years in Dawes' property. Some of these wetlands host legions of sparrows in migration, and it's prime time for those beautiful but furtive skulkers, the Nelson's Sparrow and the Le Conte's Sparrow. Bring your binoculars. As an added bonus, the foliage should be awesome - it is fall in Ohio! - and Dawes is loaded with trees of all types.

To register, just CLICK HERE.

Rare in Ohio, Swainson's Hawk draws a crowd

The famous Holmes County Swainson's Hawk

COLUMBUS DISPATCH
October 4, 2015

NATURE
Jim McCormac

On a summer day in 1827, naturalists John Richardson and Thomas Drummond were exploring uncharted territory near Saskatoon, Saskatchewan. Spying an unfamiliar raptor, Drummond drew a bead with his shotgun and fired. He had collected the first Swainson’s hawk specimen.

Named in honor of scientist/artist William Swainson, the Swainson’s hawk is an animal of great beauty. It’s about the same dimensions as the familiar red-tailed hawk, but it has a slimmer body and longer wings.

The plumage is variable, ranging from very dark forms to much paler types. Most are classified as “light morphs;” the “dark morphs” are scarcer.

The breeding range of Swainson’s hawk encompasses much of western North America, into the southern Canadian prairie provinces. A tiny population in northern Illinois represents the easternmost breeders.

Swainson’s hawks rarely appear in Ohio, and if one does, it will draw great interest.

Most have been fly-overs that didn’t linger. If you weren’t there when the bird winged by, you missed it. I was lucky indeed to be part of Ohio’s first record, on July 1, 1983. A gorgeous Swainson’s hawk flew low over Bruce Peterjohn, Don Tumblin and me as we stood awestruck on a dike near Lake Erie.

Thus, when a Swainson’s hawk appeared in a Holmes County field on Sept. 17, it was big news. This bird was no fly-by, either. It stuck tight for the next five days, spending much time in its favored 6-acre field.

The bird’s unusual site fidelity and lengthy stay made it easy for legions of birders to see.

Hundreds of binocular-toters from all corners of Ohio made the pilgrimage, as did others from surrounding states.

An unaffected celebrity, the hawk utterly ignored visitors. It was entertaining to watch as it raced about snapping up grasshoppers. Otherwise, it perched on a fence post and scanned for bugs.
Swainson’s hawks are notable for being highly insectivorous, except during breeding season when they seek rodent meat for the nestlings.

Adding to the interest was the hawk’s color. It was a dark form. I believe all six or so previous records have been of the more typical light form birds.

Swainson’s hawks are highly migratory, and virtually the entire population shifts to the Pampas region of Argentina for the winter.

That’s more than 6,000 miles — one way! By the time you read this, Holmes County’s avian star will be well on its way to the southern grasslands.

It will join legions of others on the migratory passage.

One of the great hawk-watching spots is Veracruz, Mexico. Up to 1 million Swainson’s hawks have been tallied there in fall migration. Individual flocks can number 10,000 birds.

Major thanks go to Ed Schlabach, the Amish bird-watcher who first confirmed the hawk’s identity. Ed has found many other rarities, including most of Ohio’s other Swainson’s hawk records.

Naturalist Jim McCormac writes a column for The Dispatch the first, third and fifth Sundays of the month.

Hackberry Emperors, quadrupled

A quartet of Hackberry Emperors, Asterocampa celtis, adorn a tree at Kiwanis Park in Columbus. This little-known park is nestled along one of the wilder sections of the Scioto River in this otherwise urban area, and is one of my honey holes when little time is available.

So it was back on August 2, when only a few hours were available to shoot some images. So off to the nearby Kiwanis Park I went, where something of interest can always be found. I had meant to post these pictures long ago, but they got preempted by this, that, and the other. That happens all of the time. Even one good field trip can produce numerous subjects well worth writing about, and things constantly get sent to the end of the line, often never to see the light of day, at least on this blog.

Anyway, I've long had a soft spot for these beautiful butterflies, and admire their pugnacious mannerisms. Chances are good, if a butterfly boldly lands on you, and stays put, or keeps returning, it is a Hackberry Emperor. I have a number of shots of them perched on people's hats, shoulders, noses, whatever.

It's a well-named butterfly, too. The caterpillars eat hackberry foliage. Hence the scientific epithet of the animal's formal name: Asterocampa celtis. Celtis is the genus of hackberry trees. Kiwanis Park has many such trees, and the namesake butterfly isn't hard to find. The Emperor part of the name comes, I suppose, from their habit of regally using people or other animals as their thrones (but I don't know this for sure and feel too lazy to attempt to find out right now).

There is a sister species that is a near look-alike, the Tawny Emperor, Asterocampa clyton. They're around, but at least from my experience, never as commonly as the subject of this post. In fact, that's what I thought these might be at first, as they seemed so bright and buffy - not the colder gray tones that I associate with the Hackberry Emperor. But color varies, and these are bright individuals. A good mark to differentiate the two involves those dots and the bar along the leading edge of the forewing, closest to the body (the black marks, inboard from the white ones). In the Hackberry, the inner bar is broken into two dots. In the Tawny, they congeal into a continuous bar (Hackberry: bar and two dots; Tawny: two bars).

Hackberry Emperors seem prone to perching head down on trees, just as this one is doing. They are easy photographic subjects, often allowing very close approaches. In fact, too close sometimes, as when they land on your camera lens.