Northern Flicker, violets, and ants

This male Northern Flicker (Colaptes auratus) spent much time foraging in my lawn yesterday afternoon, April 10. Ground-bound flickers are often hunting ants. It may have been no coincidence that he was particularly interested in the patches of Common Blue Violets (Viola sororia) which, of course, I let run rampant (no chemicals here). Ants are a big food source for flickers, and ants are also major dispersers of violet seeds. I suspect that my feral native violet colonies have abetted the formation of ant colonies, thus helping to feed this flicker. A "wild" lawnscape attracts much more in the way of wildlife than neatly manicured lawns dowsed with chemicals. A beautiful Fox Sparrow recently graced my backyard for the better part of two weeks, and I was treated to his lovely, whistled song daily, and scores of Dark-eyed Juncos and White-throated Sparrows overwintered. The Eastern Cottontails are in full courting mode, the local Red Squirrel, as always, tries to exert his dominance over the much larger Eastern Gray Squirrels, and Carolina Chickadees and Eastern Bluebirds are busily investigating my nest boxes. Not bad for a suburban lot!
 

A white Eastern Gray Squirrel

One of the white (leucistic) Eastern Gray Squirrels (Sciurus carolinensis) that can be locally common in parts of SW North Carolina. While the town of Brevard is famous for their white squirrels, they're elsewhere and this one was imaged near Tryon, about an hour to the east. I wanted to photograph one of these beasts on my recent trip to North Carolina to speak at the amazing Gardening for Life Festival. Thanks to Vivian and Bill for allowing to visit their property, which has melanistic (black), normal gray, and white squirrels! March 30, 2024.
 

Yellow Trillium, and lots of it!

 

An amazing stand of Yellow Trillium (Trillium luteum) blankets a rich forest in the Great Smoky Mountains National Park in North Carolina. This morning.

I'm working my way back north following a wonderful time at the Gardening for Life festival in Tryon, North Carolina. I was there to speak about moths. This region is a botanical hotspot and I've been soaking up the early spring flora, but have also seen bear, elk, and many other interesting things.

More on all this later, when time permits.

Spring Botany Blast! New River Gorge, West Virginia, April 11 - 14

The inaugural Spring Botany Blast! takes place this April 11 - 14 in and around the incredible New River Gorge in West Virginia. This region is a plant aficionado's paradise. A diversity of habitats, mostly wooded, in stunning mountain environs, harbor scores of wildflower species, often in great profusion. We'll be based at Hawk's Nest State Park, which is convenient to all of the special hotspots that we'll be visiting.

Spring Botany Blast! was started as an offshoot of the New River Birding & Nature Festival, in which I have participated as a guide and speaker for about 20 years. So, I feel I know the area pretty well, but my co-leaders Rosanna Springston, Jodi French-Burr, and Mitchell Dech know the region even better, as locals, and are also intimately familiar with the flora (and fauna).

CLICK HERE for more details, and registration information. It'll be a whirlwind weekend filled with great botanizing amid some of the showiest scenery in the eastern U.S. Following are some shots of some of the wildflowers that we'll see, but this is just a tiny snippet of what to expect. Photo ops will abound, and I'm glad to work with anyone on improving their tactics for making plant imagery.

There aren't many spaces left, so I'd suggest acting soon. Hope to see you there!

Blue-eyed Mary (Collinsia verna)

Carolina Spring-beauty (Claytonia caroliniana)

Mountain Magnolia (Magnolia fraseri)

Large-flowered Bellwort (Uvularia grandiflora)

Long-spurred Violet (Viola rostrata), rare white-flowered form

Red Trillium (Trillium erectum)

Fire-pink (Silene virginica)

Eastern Red Bats, moths, and leaf litter

Hi all, and thanks as always for reading! Sorry for the long (for me) lapse in posts. Things have been a bit busy of late, and it's been tough to carve time out to sit down and craft a new piece. But here we are, and away we go.

An Eastern Red Bat (Lasiurus borealis) nestles among the leaves of an American Beech (Fagus grandifolia). This species is the consummate tree bat, and its range mirrors that of the great eastern deciduous forest, which spans the eastern half of the U.S., stretching from the Gulf Coast into southern Canada.

Shauna Weyrauch and I have had some interesting field excursions of late, two of which involved inspecting relatively small woodlands in central Ohio. In one, we found the bat pictured above, and in the other, we found not one, but two bats ensconced in a beech. These experiences got me thinking a bit deeper about the tiny bats (as little as 10-12 grams! About the same weight as a Song Sparrow!).

A young American Beech in a Franklin County, Ohio woodland. Beech typically retains many leaves throughout the winter, and they are still on the tree come spring. Also note the rich leaf litter on the forest floor. By the way, the Red Bat pictured above is in this photo, towards the far-left side of the leafy limb that sticks out the furthest. It looks like a little dark blob.

We move in a bit closer, and now you'll probably see the wee mammal. After one gets the search image, it isn't too tough to spot roosting Red Bats - if you're giving the trees the once-over. Beech seems to be the best host, at least that's the plant that I've found most of them in. They likely hide among long-persistent oak leaves as well and are known to roost on the ground buried in leaf litter. I once saw one making aerial hunting forays during the day and the bat would return to hide under exfoliating bark high in a hickory between runs. But beech may be the easiest to find them in, and it's always worth giving trees like the one above a good look.

A Common Oak Moth (Phoberia atomaris) rests in leaf litter. As soon as we entered this woods, we began flushing moths from the litter. As it was pretty early - March 14 - I was keen to know what they were. Not many moths are yet out. It didn't take too long to get an answer, and we went on to see many of these oak moths. It seemed that every we flushed and saw well was this species, and that was quite a few.

Moths that emerge this early - this species overwinters as pupa in leaf litter - may be tied to early spring sap flow in trees. There are few if any floriferous nectar sources yet available, but sap provides a ready source of sugar for energy and a number of moth species visit oozing sap.

Face on with an Eastern Red Bat. Moths are the number one prey group for eastern bats, and relatively hefty oak moths as in the previous photo would make quite a meal for the little mammals.

I was especially interested in the potential moth-bat link as I've never encountered Eastern Red Bats in March and think of them as largely an April/May phenomenon. A quick glance at iNaturalist also shows many more April than March records at this latitude.

Red Bats are migratory, and it's thought that the majority of bats at northerly latitudes, including Ohio, migrate to southeastern states for the winter, and return in spring. Perhaps the earliest returnees are synced to arrive when very early spring sap-feeding moths emerge? These March sap-feeders are quite hardy and can fly in low temperatures. I once saw scores of Morrison's Sallow moths (Eupsilia morrisonii) flying about a northern Ohio woodlot on a March night when temperatures were in the mid-30's.

Another possibility is that the bats that we are encountering in early/mid-March are ones that overwintered. My hunch, though, is that they are migrants moving north with the first warm days, as the weather was in the 60's and even low 70's F for a few days preceding our observations.

An Eastern Red Bat tucked into senescent beech leaves.

A great many moths (bat food) are highly dependent upon leaf litter. As noted, the Common Oak Moth pupates in leaf litter, and habitually hides in it during the day. When flushed, the moths quickly return to the litter and often scuttle under the leaves. The aforementioned Morrison's Sallow overwinters as adults, but probably also spends its days hiding among leaf litter, along with numerous other species. There is even a subfamily of moths known as litter moths, as the caterpillars feed on dead leaves.

Leaf litter spawns lots of bat food in the form of moths. Fortunately, we don't generally have to worry about the leaf-blower crowd taking to the forest. But those dastardly devices do enough damage in areas where leaves should remain. Even suburban/urban gardens can produce plenty of moths if leaves remain in garden beds and other places where there is no reason to blow them away.

It remains to be seen how the continuing onslaught of nonnative invasive earthworms will impact moth production. These worms can transform an ordinarily leafy forest floor to bare dirt in short order. I've seen the effects, and it is dramatic. Presumably, such litter decimation has an adverse impact on litter moth production and by extension bats. If you aren't familiar with the worm issue, CLICK HERE.

Be sure and scope out any leafy beech you might encounter this spring. Look for little dark reddish blobs among the senescent brown beech leaves. The odds of finding one probably increase if a stream is nearby, as bats often hunt over stream corridors at night. Search enough beech and sooner or later you'll turn one up. It's a magical experience.

Bewick's Swan: An Ohio First

 

A quintet of Tundra Swans (Cygnus columbianus) prepares for landing.

I attended the annual Ohio Bluebird Society's annual meeting last Saturday, March 2, to speak about moths. Little known fact: The majority of the Eastern Bluebird's non-winter diet is moth caterpillars. Shauna and I had a great time, met lots of people, and I saw scads of friends that I haven't seen in a while. The Society is quite active and about 140 people were in attendance.

Afterwards, Shauna and I took the long way home, in order to visit Killbuck Marsh - one of the largest interior wetland complexes in Ohio. Killbuck lures scads of migratory waterfowl in spring, including large flocks of Tundra Swans (Cygnus columbianus). On February 23, Josh Yoder located a "Bewick's" Swan in a large flock of Tundra Swans, and I'd wanted to get up there to see it ever since. That bird was our primary target on this trip, and it wasn't hard to find, especially as many birders were on the scene.

The Bewick's Swan is now (mostly) considered to be a subspecies of the Tundra Swan (Cygnus columbianus bewickii). However, it has been considered a separate species in the past, and the American Ornithological Union didn't lump it into the Tundra Swan until 1983. While most authorities dealing with avian nomenclature and taxonomy consider it to be a subspecies at present, Avibase separates the two.

A pair of Tundra Swans drops in, landing gear extended. Don't expect National Geo-caliber imagery in this post. The flock of Tundra Swans that our target fraternized with was a LONG way across the marsh. Maybe 200 yards or so, so it took some photographic oomph to even get the documentary shots that I did. I used my Canon 800mm coupled with a 1.4x extender (1120mm) and that's generally not the ticket for sharp vibrant shots on a heavily overcast day. Nonetheless, the rig did allow me to capture diagnostic details of the bird in question.

As always, click the photo to enlarge

As a point of comparison for the bird to follow, here's the nominate subspecies of Tundra Swan - the subspecies that occupies North America and occurs in Ohio during migratory periods. That's an adult on the left, with a juvenile facing away from the camera. Note the classic small yellow teardrop on the bill, in front of the eye. While some individuals can have all black bills, a little fleck of yellow as on this bird is pretty typical.

One of these swans is not like the other. Specifically, the bird second from right. Even from afar, the big yellow blotch on the bill stands out. A typical Tundra Swan shouldn't (couldn't?) ever show that much yellow.

Here's the range map of the Tundra Swan, courtesy of the Cornell Lab of Ornithology Birds of the World website (I'm a longtime subscriber, and anyone with a serious interest in birds should consider a subscription, found HERE).

For the most part, all of the birds represented in America are Tundra Swans, and those in Eurasia are Bewick's Swans. A rub: The nominate subspecies of Tundra Swan (the North American birds) also breed in eastern Siberia, and hybridization between the two subspecies occurs there.

Here's the best that I could do to photographically capture the Ohio Bewick's Swan. While that big splotch of yellow exceeds anything that could, or at least should, be present on a Tundra Swan, classic Bewick's Swans can show even more yellow. On some/many/most Bewick's, that yellow forms an even larger blotch, and can extend across the top of the bill to connect the two side patches. Whether the yellow marks increase in size with age, I do not know.

Here is a germane quote from the Bird's of the World Tundra Swan account:

Birds appearing identical to the Palearctic form (C. c. bewickii) reported occasionally in w. North America (Alaska, Alberta, Saskatchewan, Oregon, and California). Some of these are likely true bewickii, but others may be bewickii x columbianus intergrades from e. Siberia, or even variants of columbianus with excess yellow on the bill. The occasional bewickii reported farther east in North America may represent escapees from captivity.

To address the latter point about escapees: While many species of waterfowl are kept - sometimes fairly commonly - in captivity, and occasionally escape, I don't think that's the case here. A search, less than comprehensive, admittedly, for Bewick's Swans for sale revealed nearly no sellers, and I've not personally heard of this subspecies being peddled by waterfowlers, at least in this part of the world. Also, the appearance of the Ohio bird syncs perfectly with the major northward push of Tundra Swans, and it is fraternizing with them. Presumably a wayward Bewick's Swan, prone to vagrancy, would also wander at this time of year. And more records have occurred in the east since that quoted paragraph above was written. eBird records about a dozen records to date from the eastern U.S. and Canada.

The bigger question involves hybridization between the subspecies, and definitively answering that is well beyond my paygrade. While I've seen many thousands of the nominate Tundra Swan subspecies, I've got next to no experience with Bewick's Swan. I think it would be very helpful to get images of this bird to someone who sees lots of Bewick's Swans and understands their variability, and especially the appearance of hybrids between the subspecies.

NOTE: It is always helpful to remember that "species" are merely a human compartmentalization scheme. All species are in a constant state of evolution and where one draws the line of separation between two very similar "species" or especially "subspecies" is almost always somewhat arbitrary.

Any way one slices this swan, it was a great find by Josh Yoder, and the bird offers interesting food for thought, in addition to its undeniable curb appeal. It is an apparent first state record for Ohio, and one of very few reports anywhere in eastern North America.

The first wildflowers erupt

 

Ivy-leaved Speedwell (Veronica hederifolia) was in full bloom on south-facing slopes of the Ohio River last Saturday, February 24. Shauna Weyrauch and I visited the deep south of Ohio last weekend seeking, among other things, early flora. This species was not a primary target. Little Eurasian weeds such as this speedwell are always among the first flowers to bloom, and some of them, such as Dandelion (Taraxacum officinale) can be found in flower any month of the year. On this excursion, native plants were our goal, but I could not resist an image of the showy speedwell flower.

Our first stop was the Arc of Appalachia's Chalet Nivale Preserve in Adams County. The "Nivale" in the name refers to Trillium nivale, or Snow Trillium. Thousands of the tiny lily relatives occur there, and it is the first of Ohio's seven trillium species (used to have eight. Trillium cernuum is considered extirpated and was only documented once, in 1879 in Lake County) to bloom.

While February 24 might seem early for this species and the ones that follow to be in flower, such enthusiasm to burst from the soil is not atypical. We saw maybe 30 trilliums in flower, out of the many thousands that occur at this site. Unless there is heavy snow and extreme cold in late February - an ever-rarer occurrence, it seems - one can nearly always find a few ambitious specimens of our earliest species to bloom.

A brave Virginia Bluebell (Mertensia virginica) thrusts forth a flower and several buds. Our next stop was the Arc of Appalachia's Ohio River Bluffs Preserve, which overlooks the Ohio River and the hills of Kentucky. The steep south-facing wooded slopes always spawn early wildflowers, often a week or more before other sites in southern Ohio.

The Bluffs are famed for their huge carpets of bluebells, and they'll probably be peaking around mid-March. Scores of densely tufted rosettes were out of the ground on our visit, but almost none had managed to produce blooms like the hardy specimen in the photo. It was about 28 F when I took the picture.

Unsurprising but always welcome was the aptly named Harbinger-of-spring (Erigenia bulbosa). The elfin parsley is to be expected by late February, but while there were scores of rosettes, this was one of few flowering specimens that we saw.

PHOTOGRAPHY NOTES: When shooting wildflowers, it is important to get on the level of the subject. I sometimes handhold - if I can get a fast enough shutter speed - and have the camera's body on the ground. That's what I was doing here. Harbinger-of-spring is only a few inches in height, and to get the beautiful creamy bokeh (background) there cannot be distractions like leaf litter immediately behind the subject. Plus, getting on the subject's level creates an intimacy lost when standing or kneeling and shooting down on the plant.

More often than not, though, I prefer to have the camera mounted on a tripod. And the Oben CTT-1000 is killer for wee subjects, the best I've yet found. It is carbon fiber, weighs nearly nothing, is highly adjustable and splays flat on the ground if you want. This micro-tripod is only about $90, and so small it tucks easily in my backpack. Jeff B. has them RIGHT HERE and will promptly ship it to your door.

The advantage of having the rig stabilized on a tripod is that my favorite settings can be used. I like to shoot at very low ISO settings, usually 100 or 200, and that can mean really low shutter speeds. Somewhat offsetting that is the wider apertures that I favor for plants, which usually range from f/4 to f/7.1, rarely smaller. As long as wind isn't a factor, shutter speed is irrelevant when working from a tripod. This Harbinger-of-spring shot was an exception to my standard apertures: I shot it at f/9 (at 1/30 second), to get a bit more depth through the inflorescence, and because there were no potentially distracting objects behind my subject. With no need to hold the camera, I can use two-second timer delay, so that I'm not even touching the camera when it fires. The Canon R5 has the ability to just touch the rear screen, and it instantly focuses on the spot that you touched and then immediately initiates the shot process. Two seconds later, the camera fires. Flash? Never, or nearly never, if the subject is a plant. Flash typically imparts a harshness to the subject, and harshness is not what I'm after with wildflowers.

One our most beautiful members of the Liliaceae, White Trout Lily (Erythronium albidum). It leads the parade of trout lilies - two other species occur in Ohio - and it isn't atypical to find a few in flower by late February. Come early to mid-March and on into April, the two yellow species will be in flower in southern Ohio, and one of them is one of our rarest plants, the Goldenstar (Erythronium rostratum). The Arc of Appalachia (incredible conservation organization!) owns the Gladys Riley Golden Star Lily Preserve in western Scioto County, and it is a must-visit place when its namesake Goldenstars are in peak bloom. There are thousands of them, and one would not suspect it is rare in Ohio after seeing them all at this site. But there is only one other much smaller locale in nearby Adams County. The peak bloom varies a bit from year to year, but usually is between mid to late March, although in years past I've seen flowers in early March, and into the first week of April.