The Last Dragonfly and the Last Moth

Bruce Spanworm Moth

By the time November arrives, all but the hardiest of insects have vanished, leaving only those few species that are adapted to the cold temperatures of mid-autumn in Canada. The last dragonfly on the wing here in Ottawa is the Autumn Meadowhawk, a small red or brownish dragonfly with very little black along the abdomen and yellow or brown legs. It is these two traits that make them easy to distinguish from other local meadowhawks – the other common species have distinct black markings on the abdomen and black legs. The most similar dragonfly in our area is the Saffron-winged Meadowhawk, which also lacks distinct black abdominal markings. However, the Saffron-winged Meadowhawk is larger, usually has a noticeable amber-coloured tint to the leading edge of its wings, and has black legs with brown stripes. In addition, most of the other meadowhawk species are gone by mid-October.

The Odes of Late Summer

Green-striped Darner (male)

By mid-August most dragonfly species are on the wane. A few families are still quite abundant, particularly the darners and meadowhawks, while small numbers of other skimmers and a few clubtails often linger into September. Forktails, bluets, and some spreadwings are also still common in the appropriate habitats in August and September. This makes it worth going out to good dragonfly habitats such as large rivers, lakes and marshes to see a decent variety of species.

Large dragonflies this time of year are particularly interesting; while Common Green Darners are the most frequently encountered large dragonflies of late summer, you might come across a Black-shouldered Spinyleg basking on the rocks along the river, a Wandering Glider zipping over a meadow, a Twelve-spotted Skimmer flying above a pond, or a group of mosaic darners swarming through the air late in the afternoon. The mosaic darners are a particular favourite of mine; they are large brownish-black dragonflies with mottled spots of blue, green or yellow depending on the sex. While they spend most of their time flying through the air hunting for small insects, I often come across them perching vertically on thick stalks of vegetation below knee-height in open grassy areas early in the morning. We have several different species in Ottawa, and trying to find something other than the ubiquitous Canada and Lance-tipped Darners is a fun exercise.

A late summer visit to Marlborough Forest

Philadelphia Vireo

Marlborough Forest has become one of my favourite spots to visit because of its bounty of butterflies, breeding birds, and dragonflies. The best month for visiting is June, when birds are are still singing and insect diversity is at its peak. The first few weeks of July are also a fine time to visit, as different butterflies are present than were initially flying in early June. By mid-August, however, it is harder to detect birds as most have stopped singing, and insect diversity is on the wane. Still, I thought I would visit the E4 trail on the third Saturday of August, a place I hadn’t been to since Canada Day. I was curious to see what birds might still be present, and whether it might be a good spot to see different darners and meadowhawks.

I arrived a little later than I usually do at the height of nesting season – 9:00 am instead of 7:00 am – to give it time to warm up. The biting bugs were not as bad as they are in the middle of summer, but I was annoyed to still find myself slapping mosquitoes away. The woods were very quiet compared to June; the Red-eyed Vireos and one Eastern Wood-pewee were still singing (both sing late into the season, sometimes into September), but the Ovenbirds, Scarlet Tanagers, Veeries, Nashville Warblers, Black-throated Green Warblers, White-throated Sparrows, and Swamp Sparrows were silent.

Ode-hunting along the River

Shadow Darner

Mud Lake and Andrew Haydon Park are usually excellent places to find different species of dragons and damsels throughout the summer months. In both 2015 and 2019 I had a good number of species at Andrew Haydon Park in late July, and an OFNC dragonfly outing at Mud Lake on July 21, 2013 also netted some fantastic species. I was hoping for some similar luck on an ode-hunting trip on July 24th, but this time I found fewer species and fewer individuals overall. I am not sure why there seem to be so few dragonflies around good pond habitat these past two years (such as the Eagleson ponds), but the trend is concerning.

My first stop was the shoreline at Mud Lake where I hoped to find some large river clubtails perching on the rocks in the channel behind the filtration plant. When I arrived I was happy to find two dragonflies perching on the rocks right away, and managed only to photograph one before a couple of people came along and scared them both – while I’m certain one of them was a clubtail, the one I photographed turned out o be an Eastern Pondhawk. The clubtail did not return, although I saw a couple flying out over the water several times on my visit.

Ode-Hunting in Early July

Taiga Bluet

By early July a variety of dragonflies and damselflies are on the wing, although some of the early species – such as the Beaverpond and Spiny Baskettails – have already finished flying for the year. This is usually the time of year when I start focusing on odes on afternoon outings in addition to enjoying them as distractions on morning birding outings. While some of the best ode-hunting can be found along the Ottawa River (including Mud Lake, Andrew Haydon Park, Petrie Island, and Morris Island) there are some great spots in my own backyard, including Bruce Pit, Stony Swamp, and the Eagleson storm water ponds (which will be the focus of a separate post of its own). Bruce Pit is a particularly great spot for odes, and some unusual ones have turned up there including Swift River Cruiser, Black Meadowhawk and Black Saddlebags. Eastern Red Damsels used to breed there prior to 2010, and I decided to spend the afternoon of July 4th wading around the edges of Bruce Pit to see if I could find any. Unfortunately, the area where we used to see them (and odes such as Amber-winged Spreadwing and Saffron-winged Meadowhawk) has become overgrown with cattails and phragmites over the year, so I wasn’t sure it was possible to walk along the shore where we used to go a decade ago (I can’t believe it has been so long …. apologies to those who have never visited my old LiveJournal site, back in the days when I used to host my images on Photobucket which no longer allows free hosting and has hidden many of my images).

A trip to Morris Island with the McNamara Field Naturalists

Slaty Skimmer

On Saturday, July 3rd I accompanied the McNamara Field Naturalists on their first in-person outing since the latest Stay-at-Home Order ended on June 2nd. Ontario entered Stage 2 of its reopening plan on July 2nd, which raised the number of people who could attend outdoor social gatherings and organized public events to 25 people (as well as allowing haircuts and personal care services again). Although I am not a member of the McNamara Field Naturalists Club, which calls Arnprior home but whose explorations include a large swath of the Ottawa Valley, one of my friends happens to be in charge of putting field trips together, and asked if I wanted to help lead a dragonfly walk. I said yes, and suggested Morris Island as it’s a great place to find all sorts of odes, including several flashy skimmers and clubtails that can be found perching in the vegetation and along the trails. I was thrilled when my mentor Chris Lewis joined us, as it would be easier to find some more of the unique species with a couple of knowledgeable people looking.

More Marlborough Butterflies

Eastern Tailed Blue

Every time I leave Marlborough Forest I can’t wait to go back. My last visit occurred on June 12th, and as insects were my primary target, I was disappointed that the cloudy, rainy weekend weather toward the end of June meant I wasn’t able to return until July 1st. Once I saw the gorgeous, sunny forecast for Canada Day I knew immediately I needed to return to Trail E4 in the hope of finding some skippers and maybe some unique emeralds. Last year I had seen some large unidentified emeralds patrolling the trails well before the early morning shadows had vanished from the narrow trail, so I made sure I left early enough to find any that might be out and about despite the coolness of the hour.

The birds were in full song when I arrived, and I was happy to hear the chorus of Winter Wren, Eastern-Wood Pewee, Wood Thrush, Scarlet Tanager, Veery, Red-eyed Vireo and a single Blue-headed Vireo intermingling with the usual Marlborough warblers: Black-and-White, Nashville, Black-throated Green, Pine, Common Yellowthroat, Northern Waterthrush, and of course plenty of Ovenbirds. I also heard a cuckoo calling, and in the far distance, the bugling of a Sandhill Crane! I heard its prehistoric call twice from somewhere north of the T-intersection beyond the ponds. This is the second time I’ve heard this species here – the first was back in March when at least two were calling to the west of the pond.

Bruce Pit Specialties

Gray Treefrog

Although Bruce Pit is chiefly known as a popular dog park, the walking trails around the pond (which are not part of the off-leash area) are great for finding all kinds of interesting flora and fauna. I usually make a couple of trips to the pond each summer, looking for specific butterflies, frogs and odonates which are difficult to find elsewhere. Although it’s been a few years since I’ve seen some of the more unique insects – including American Copper, Eastern Red Damsel, Amber-winged Spreadwing and Saffron-winged Meadowhawk – other frog and insect populations are still doing well.

My first visit of the summer occurred on July 5th in the hope of finding an Acadian Hairstreak at the base of the toboggan hill – the only place I’ve ever seen one in the west end. I hadn’t seen any here since 2014 and 2016 and doubted they were still around, especially after I saw how few wildflowers were left to grow near the marshy area in my failed attempt to see them last year. I failed again on this visit, too, but proceeded to check a few other spots where the milkweed was blooming as these flowers are known to be insect magnets.

Amber and Saffron Wings

Saffron-winged Meadowhawk

It’s been a good season for hard-to-find dragonflies at the Eagleson Ponds. Ever since I discovered both Eastern Amberwings and Saffron-winged Meadowhawks here in 2017 I’ve been spending more time here later in the day looking for odes, rather than doing a quick search for birds first thing in the morning before heading elsewhere. The Covid-19 pandemic has made that even easier for me, as I am still working from home and can get out at lunch time for a quick check when the temperature has warmed up enough for many odes to be flying.

Mid-summer seems to be the best time for seeing a variety of odes at the ponds. While I have seen a few early-season species here, such as the Taiga Bluet and Spiny Baskettail, most odes that breed here don’t emerge until later in the summer. I’m not sure if the late start to spring had anything to do with it, but up until the end of June I found very few dragonflies here – skimmers are usually abundant throughout the season, but on June 30th I recorded a single Dot-tailed Whiteface and a single Twelve-spotted Skimmer along with a couple of Common Green Darners and Prince Baskettails that refused to land. Even the Eastern Forktails seemed down in numbers.

Red Rock Canyon

Variegated Meadowhawk

On our last full day in Las Vegas Doran and I went to the Red Rock Canyon National Conservation Area to spend some time in the desert. We returned to the Pine Creek Canyon trail, the place where our last trip to Las Vegas began. We got a late start, and were dismayed to see two long lines of vehicles waiting to enter the park. In addition, the price had risen to $15 per vehicle – on our last trip in December 2017 it had only been $7. As long as the money goes toward preserving the area or public education (the Visitor Center has some wonderful exhibits) I’m happy to pay an entrance fee, but the increase was a bit of shock.

We started our visit at the Visitor’s Center. As it was quite crowded we stayed away from the center itself, and walked around the parking lot looking for Cactus Wrens. This was my favourite bird from my last visit here, and I was disappointed when none appeared. We did see a White-tailed Antelope Squirrel scurrying across the parking lot, and I was worried that it would be hit by a car.