Category: In the Field

Virginia’s newest State Park is Sweet Run SP, not far from Harpers Ferry and nestled in the Blue Ridge synclinorum. The site of the former Blue Ridge Center for Environmental Stewardship, the amenities have not yet been updated to state park standards. Without a GPS, you’d likely not find the gravel driveway leading off Virginia 671.

I had a couple hours before visiting Charlie in the afternoon, so I walked the Farmstead Loop Trail. The pleasant news is that, in this park, the trails are shorter than they look on the map. Walking counterclockwise around the loop, there’s only one stretch of climbing. The blazes are sufficient for you to find your way around in this woods.

I pulled a reasonably good recording of Wood Thrush (Hylocichla mustelina ).

I’ve a mind to return for a longer visit.

Nelson DeBarros led a walk to a small acidic seepage swamp tucked into a Franconia neighborhood. The park is variously named Springfield Forest Park or Franconia Forest Park, depending on whose map you use. Here, Nelson points out a Poison Sumac (Toxicodendron vernix), while all of us keep our distance.

The wetland was rather dry today, but it was supporting a vigorous community of acid-loving heaths, like Black Highbush Blueberry (Vaccinium fuscatum), as well as some drifts of Netted Chain Fern (Lorinseria areolata)—which I learned as Woodwardia.

For the most part, I left the sedges and rushes to Grass Buncher Margaret C, but I did pick up the tidbit that the green above the inflorescence on Juncus effusus is actually a bract, not an extension of the culm.

A bitsy Krigia virginica had escaped the mower in a patch near the play equipment. Black Tupelo (Nyssa sylvatica) was coming into fruit—with a big swath of unidentified galls on its leaves.

Continuing to chase badges in the Virginia State Parks Trail Quest program, I booked a motel room in Clarksville and laid out an itinerary to visit three parks (starting with Occoneechee, across the bridge over the Kerr Reservoir) and two Natural Area Preserves. On my way home, I added a stop at Lake Anna State Park, bringing my parks-visited count to 13.

Even accounting for the fact that I was visiting midweek, traffic at the parks was much reduced from the early COVID-19 months.

At the visitor center for Staunton River State Park, there’s a winding path mowed through a meadow that’s better visited in the morning when your eyes and legs are fresh. “Winding” is too weak: “labyrinth” is more like it.

Turkey Run Trail in Lake Anna turned up numerous Blue-fronted Dancers (Argia apicalis), while the railroad trail at Staunton River Battlefield Park yielded a Blue-Tipped Dancer (A. tibialis).

The centerpiece of the road trip was Difficult Creek Natural Area Preserve, in Halifax County. Dr. Hardtacks, parked outside the gate, is all ready to help with the visit.

The preserve is in the process of being converted from pine farm to the open savannah that was typical in pre-contact days. When the trees are lined up like dominoes, you know you’re looking at a farm.

Here’s a view of the restored habitat. I found several plants to puzzle out, including Lobelia spicata, an evening primrose (a nemesis species for me), a skullcap (Scutellaria sp.), and Pasture Rose (Rosa carolina).

But the best observation of the stop was hearing, and then later flushing, Northern Bobwhite (Colinus viginianus). I don’t think I’ve seen bobwhite since the days that I birded with Susan.

The pickins at Chub Sandhill NAP, in Sussex County, were pretty slim, although I did find a species of Venus’s Looking Glass (Triodanis perfoliata) on the roadside. However, the best bit of the visit was stumbling across a restoration area of Longleaf Pine (Pinus palustris). I’ve seen this tree in slide shows, but nothing can prepare you for what you see in the field: its spray of needles is magnificent.

I’m always on the lookout for tiger beetles. The only ones I find around here are Six-spotteds (Cicindela sexguttata). Looking at one of my zoomed-in crops, I noticed that it’s quite common to see an extra pair of spots, in the middle of each elytron rather than along the edge. We should have called them eight-spotted tiger beetles.

Andrew Eberly of the Clifton Institute led a show-and-tell-and-do workshop on the organization’s research into Eastern Box Turtles (Terrapene carolina carolina). The research focuses on what habitats the turtles are using, and what habitats nearby that they give a pass to. Like the kestrel research, one of the goals is to inform landowners about management choices (i.e., when and how to mow). The Institute has numbered more than 100 turtles (there are lots on the 900ac property) with small, harmless notches on the edge of the carapace.

One aspect of the research is simple mark-recapture, with the collection of various vitals. Andrew is weighing and measuring a turtle that hadn’t been observed on the property before—so it’s a new entry in the database.

Certain of the turtles carry radio transmitters (attached with marine glue to the carapace). These turtles are surveyed more regularly. They are relocated with a receiver and antenna (not unlike the gear that I saw in use in North Carolina tracking Piping Plovers). Each turtle is transmitting on a distinct frequency, and the transmitters are good for about 400 days.

To sample nearby habitat that a turtle isn’t using requires finding a randomly selected point within a 100m radius of where it was found. Bushwhacking required.

The season is winding down:

The Magnificent Seven did a quick run through the boxes, as we had competing obligations later in the day. Four boxes completed hatching, including Box #67, bringing us up to 7 successful clutches this season. The three ducklings that I found in the box two weeks ago had departed the box (whew!). B made some repairs to Box #3, but reported that the hardware cloth needed immediate repair; C said that he would fix it that afternoon. The other interesting thing about #3 is that the Wood Duck hen is incubating only 3 eggs. (Box #67 at left.)

We’ll do one more check-em-all pass on Sunday, 21 May, with the expectation that we will have hatches in Boxes #10 and #3. It would be possible but unusual for a new clutch to be started between now and then. I will experiment with sealing gaps around the predator guards for a few of the boxes…. (Box #60 at left and right.)

תודה

Yesterday’s trip to Warrenton provided a recap of current research results from studying American Kestrel (Falco sparverius) behavior in the field, a bit of hands-on experience preparing ink traps (to detect the presence of prey items) and walking transects (ditto), and the opportunity to observe (at a safe remove) a female kestrel being fitted with a GPS-based transmitter. At right, the bird (nicknamed Sam [her mate is Frodo]) after getting her backpack.

A few Eastern Forktails (schnura verticalis) (and) and dragonflies were flying at the Institute.

Saturday was a volunteer work day at Shenandoah National Park, cut short by thunderstorms that rolled through mid-day. There was an hour of schmoozing before we actually got working: I got to meet the superintendent of the park and some other good folks. I’ve never seen so many green uniforms in one place before. In the end, we put paid to several patches of Garlic Mustard.

So, in order to make Saturday not a bananas early drive, I booked a room in Luray for Friday night and planned a little hike for that afternoon. Really, the point of the hike was to find out whether I can still handle the trail from the gap up to the Hawksbill Mountain summit, and I am glad to say that I can. It took me an hour to ascend the ca. 690 feet. Another 2:15 for a lunch break, return by the Salamander Trail and Appalachian Trail, and several photo stops. Figure about twice as much time (3:15) as it took me back in October 2009 to cover the 2.9 miles.

The view from the summit is still very fine.

From the AT, watching the mountain take itself apart into Legos, in slow motion.

At one stretch of the trail, the talus slope has overrun it. Dude, where’s my trail? I saw no blazes on the boulders, so perhaps this is a recent development?

Unplanned observations included quite a bit of the uplands’ signature trillium (Trillium grandiflorum), a polypody that I’m hoping for an ID confirmation, and a seen-heard-but-not-photographed American Redstart (Setophaga ruticilla). I packed my camera with the long lens but decided not to carry it on the trail. Good call, considering all.

Our schedules are jumping around, so we checked boxes again today:

One box has hatched (early nesting Hooded Merganser in Box #5), the other box is very due. Two more nests started, making eight active nests, but it still seems like activity is a bit slow this year.

We repaired Box #4; B will bring washers and screws to work on Box #3.

We’ll meet again on 23 April, and then on 7 May.

City Nature Challenge is 28 April through 1 May….

TY is in Danish today: tak skal du have!

A splendid time was had by Mason & Bailey Club Auxiliary participants in a joint field trip/going away get-together for yours truly, meeting on 18 March. We walked a loop from Peirce Mill to Pulpit Rock and paused for a snap by A.

In addition to the spring ephemerals that I had scouted earlier in the day, K found a sessile trillium about to bloom (either Trillium sessile or T. cuneatum—I’m in dialogue with some iNatters).

Nancy Vehrs led a walk at Conway Robinson State Forest, a new site for me. The 440 acres of woods are near Manassas National Battlefield Park, but not contiguous to it, and they will soon be boxed in by development on all four sides.

Once you walk north and cross through the zone where bedrock crops out, the flora really pops as you descend the slope to Little Bull Run. Round-leaved Hepatica (Hepatica americana) and Bloodroot (Sanguinaria canadensis) were easy to find. At the run, Virginia Bluebells (Mertensia virginica) were going to town.

The walk back up the hill was a bit of a puff, especially at the end of the day.

Bonus herp for the trip was a Dekay’s Brownsnake (Storeria dekayi).