Skimmers – Page 4 – OdoNotations

Ode Species #36 for the Eagleson Ponds

It was only six weeks ago that I last added a new species to the Eagleson storm water ponds ode list, the River Jewelwing that mysteriously showed up for one day back on June 10, 2023. I wasn’t expecting to find another new species so soon, but that is exactly what happened when I went for a walk there this afternoon. My goal was to look for the diminutive Eastern Amberwings, a species that I would have looked for earlier in the month had I not been in Nova Scotia. This colony first showed up in 2017 and its numbers have been increasing in the southern ponds over the last six years. I was happy to find four males perching on the lily pads on my visit; it appears they are still thriving here.

I saw Orange Bluets here for the first time this year on July 3, 2023, and I was hoping to find a few close enough to the shore to get a good photo. This is the second season that I’ve confirmed their presence here, and I was disappointed not to find any on this visit.

I saw Blue Dashers here for the first time this year on July 7, 2023; this is also only the second year that I’ve seen them here, and I counted at least eight of them around the two southern-most ponds. They are so beautiful and colourful when fresh – I can’t imagine ever becoming so used to them that I don’t want to stop and admire them, especially when they are sitting on a such a lovely perch.

I saw a male and female Common Whitetail flying over the pond together; the female was ovipositing. A White-faced Meadowhawk and a Band-winged Meadowhawk were nice to see, though the Band-winged Meadowhawk didn’t stick around long enough for photos. I’ve been keeping an eye out for Saffron-winged Meadowhawks, a species that was common here in 2020 but has been diminishing in numbers ever since – I only found two in 2021 and one in 2022. I didn’t see any on this walk, making me wonder if the population has died out. Its season lasts until September, so it is not too late to keep looking for this species.

A Slender Spreadwing was the only other odonate of interest, other than the Eastern Forktails that are usually too numerous to count.

I finished my walk with a loop around the Hope Side pond, stopping at the bridge where I took a moment to scan the water toward the overpass. I’ve seen muskrats swimming and dragonflies flitting among the vegetation here, and almost immediately something small and black fluttering in the tunnel formed by the cattails toward the bridge. When I got my binoculars on it I saw a male Ebony Jewelwing sitting in the sun!

Ebony Jewelwings are usually found at woodland streams, preferring those with rapids although they may be found at shaded, slow-moving streams as well. The area it was inhabiting at the Eagleson ponds is no more than a shallow channel that drains water from the ponds into a narrow waterway running alongside a patch-work of fields before entering the Jock River at Terry Carisse Park. But since a River Jewelwing has already found its way up here perhaps I shouldn’t be surprised that this Ebony Jewelwing had followed. This is ode species #36 for the ponds – a terrific number for such a small area and limited habitat.

I wonder what #37 will be?

Nova Scotia 2023: Odes of Marsh and Pond

The weather played a big part in our trip this year. Rainclouds blew in and blew out all week long, bringing rain on most of the days we were there. Fortunately the sun came out long enough to get in a few hikes at the various waterfalls and for me to take some long walks while Doran was out with the car. I spent quite a few hours looking for odonates and other critters around the ponds and the Annapolis Rail Trail, mostly in the afternoons when the sky cleared up. Although they are maybe half as long as the Eagleson storm water ponds by my house and much less diverse in terms of wildlife species, I still managed to find an interesting variety of creatures.

The afternoon after our waterfall search was particularly productive. I found my first Band-winged Meadowhawk and Familiar Bluet of the trip, which are also my first observations in iNaturalist for Nova Scotia for these species.

Nova Scotia 2023: Dragon-hunting around Middleton

Doran and I visited Nova Scotia again in mid-July, now one of my favourite times to visit after seeing so many dragonfly species on our last trip. This time we rented an Airbnb in Middleton – the basement suite of a house right on the Annapolis River. Although the vegetation along the river was much too thick to get close to the water, there were a few well-trampled trails leading down to the water’s edge. In addition, our location was close to both Bridge Street (Highway 10), with Riverside Park on the opposite bank, and the South Shore Annapolis Trail which has its own bridge across the water and runs behind Riverside Park and the Middleton sewage lagoons. We got settled into the apartment, and the following day that Doran and I went exploring. My fiancé had recently become interested in searching out local waterfalls, and as a number of clubtail species can be found on fast-flowing rocky rivers, I was more than keen to accompany him.

Gatineau Park: In Search of Emeralds and Clubtails

Chris Traynor and I chat about dragonflies and damselflies a lot. We both also like to pour over old dragonfly reports, iNaturalist records, and Google maps looking for suitable habitat for this species or that, as well as interesting places to go dragon-hunting in general. It was Chris who, when searching for places to see Clamp-tipped Emerald, thought that Taylor Lake in the northwestern part of Gatineau Park might be worth a visit. There are two iNat records from the area from 2015, as well as one Brush-tipped Emerald record from a few kilometers away. The map shows a variety of ode-worthy wetlands including streams, ponds, seeps and marshes, and an exploratory hike of about 5 kilometers in the fall cemented his impressions and desire to return there during prime dragonfly season. It was also almost completely unexplored for odonates, which made it quite enticing in my eyes, and close to a spot where Chris Lewis and Bob Bracken had discovered a stream with mature Eastern Least Clubtails and other clubtails several years ago. Good Somatochlora spots in the Ottawa-Gatineau region are uncommon, and we both thought would be fantastic to discover one up in Gatineau Park. I emailed Chris Lewis about Chris’s idea to check on the trails around Taylor Lake and revisit some of her and Bob’s footsteps in Gatineau Park, and the three of us made plans to visit its northern reaches on July 8th.

Exploring Marlborough Forest South

I’ve been studying the map on iNaturalist over the past few weeks, looking for new parts of Marlborough Forest to explore. In particular, I’ve been looking for ways to access it from the south, where there are very few trails or points of entry….and very few odonate records. Paden Road runs along the southern boundary, while Malakoff Road winds along its eastern boundary. There is one formal trail on Paden Road, and there are other roads that enter the forest and come to dead ends with what look like trails extending beyond them. I found four places that looked intriguing: one such trail extending beyond Mulholland Road at Harnett Road; a place further south on Harnett Road where it cuts through a large wetland; another extension beyond Weedmark Road off of Paden Road; and the Paden Road trail itself. I planned a day outing in June to see if these places were as fantastic for odes as they looked on the map. If I had time, I also wanted to explore Heaphy Road on the western boundary, which runs through another big wetland. I scheduled this project for the second Sunday in June and was looking forward to it; however, when I woke up on June 11th and saw that the forecast called for increasing cloudiness with a low chance of rain later the afternoon I wasn’t sure if I would see many bugs. However, I didn’t want to put it off as it was already almost the middle of June and soon many species would be done for the year.

Searching for the Arrowhead Spiketail

Spiketails are large, brightly coloured dragonflies that inhabit small or mid-sized streams, usually with a good current in forested areas. There are three species present in eastern Ontario, all with dark brown or black bodies, green eyes, and bold yellow patterns along the abdomen that may cause them to be confused with clubtails in flight. Each species has a dark thorax with two vivid yellow stripes on the side and two smaller yellow dashes on the top. It is the pattern on the top of the abdomen that distinguishes them: the Arrowhead Spiketail has a single line of yellow arrows pointing toward two round spots at the tip; the Twin-spotted Spiketail has two lines of yellow spots with straight tops and rounded bottoms running down the abdomen, set close together; and the Delta-spotted Spiketail has two lines of widely-separated spots running down the abdomen, each pointed and distinctly triangular in shape. Because of their habitat requirements, they are considered local and uncommon, and in Ottawa the Arrowhead Spiketail is considered the rarest of the three.

Two new odes at the Eagleson Ponds

I wasn’t expecting to find a new species for the Eagleson storm water ponds when I went there this morning, let alone two; my main goal was to look for some Rainbow Bluets in the vegetation around the southern-most pond. My walk started normally enough, with the usual odonates perching in the vegetation: Taiga Bluets, Eastern Forktails, Sedge Sprites, and even a Fragile Forktail. I headed out onto the small spit of land where I used to see Saffron-winged Meadowhawks and Eastern Amberwings perching over the water before the sparse planting of cattails became a solid, impenetrable wall of vegetation. There was one dragonfly here, and I caught a glimpse of the black and white colours as it landed on the ground ahead of me. It was Chalk-fronted Corporal, and at first I thought nothing of it as I snapped a few photos for my iNaturalist project. After all, these dragons were not only common, but also abundant where they happened to emerge. It took me a moment to realize that although I see them quite regularly at Sarsaparilla Trail and in Marlborough Forest, I had never seen one here at the ponds before. It was a new species for my project!

I only saw one as I made my way around the southern-most pond, but then I didn’t have time to check any of the others. Would it be a one-time visitor, like the Racket-tailed Emerald of 2022 or the Violet Dancer of 2020? Or would more follow? I’d seen a noticeable decline in skimmer numbers over the last year or two, so new additions were definitely welcome. There are fewer Common Whitetails, Twelve-spotted Skimmers, Widow Skimmers, Eastern Pondhawks and Dot-tailed Whitefaces around the edges of the ponds than there used to be. While none of these had ever been truly abundant, I would usually see a few on most visits in appropriate weather. I suspect the large number of fish – particularly carp, which feed by disturbing the wetland floor and stirring up sediment containing dragonfly larvae – and growing number of frogs and toads are likely responsible for this decline, but have no evidence to support this theory.

I found some Rainbow Bluets in the vegetation right where I expected them – they seem to prefer the western side of the southern pond – and was reassured when I saw a Common Whitetail a little later, flying over the small J-shaped pond next to the rock bridge before landing on a bare patch of ground sloping down to the water. I was making my way around the pond back to my car, looking for pondhawks basking on the rocks when something black fluttered in the vegetation below me. When I identified it as a male River Jewelwing I was astonished, as this was a species I never expected to find here at the ponds.

River Jewelwings live along medium-sized streams and small rivers with a slow to moderate current and plenty of submergent vegetation. They prefer more open waterways with more sunlight than Ebony Jewelwings, though the two species are often found together along wooded streams. The closest places I’ve seen River Jewelwings are the stream at the back of Jack Pine Trail in Stony Swamp (which I call Spiketail Creek), and Stillwater Creek at Corkstown Road just east of Moodie Drive. The former was a one-time visitor, while the latter was seen during an exploratory excursion in 2015 with Chris Traynor after I saw one away from the water across the road in 2011.

There is a small channel of water that runs south from the Eagleson storm water pond system through farmland before reaching the Jock River at Terry Carisse Park. It has enough of a current to keep it open during mild winters, and I suppose it is just as likely that the River Jewelwing flew up the channel as it is that it flew or was blown south from Stillwater Creek. It’s a mystery as to where it came from and where it was going when it found the ponds, and I expect this to be a one-time visit rather than the harbinger of a new population of River Jewelwings at the ponds.

As I was photographing the jewelwing I saw two Common Green Darners fly by in tandem. This species is common at the ponds, and I usually see one or two patrolling the shoreline every visit in the first couple of months of the season. The pair stopped so the female could lay her eggs, inserting the tip of her abdomen into the water while still connected to the male:

It is always fun adding new species to my project, especially if they become permanent residents: the larger the number of residents, the healthier the ecosystem. Dragonflies and damselflies in particular are good bioindicators of water quality and the health of a wetland, as they require clean water in which to grow as larvae and survive to adulthood. Given that the purpose of the storm water ponds is to collect poor-quality runoff from the surface of the city streets, which often contains road salt, vehicle fluids, bacteria, fertilizers, pesticides and other pollutants, I had my doubts whether these ponds could support a vibrant population of dragonflies. However, with recent additions such as the Orange Bluet, Eastern Amberwing and Band-winged Meadowhawks, whose populations seem to be stable, it seems that the water quality is in fact high enough to allow these species to thrive.

My informal list stands at 35 species as of June 2023, which is the same number as the species recorded on the iNaturalist project, though with two differences: I don’t count the single record of Hagen’s Bluet which shows up there, as the photos do not show sufficient detail for me to identify it; and I do count Prince Baskettail which is not in iNaturalist, as I have seen many but have not been able to photograph or catch one. I don’t count the Northern/Sweetflag Spreadwings which I’ve seen but haven’t been able to catch, either, since identification requires a close view of the male’s claspers….all goals for future visits!

So what species will turn up here next? I’m thinking Powdered Dancer or Halloween Pennant are most likely, but with dragons and damsels one just never knows. As my mentor says, odes – just like birds! – have wings and can turn up anywhere!

Brush-tipped Emeralds in Marlborough

Family Corduliidae (the emeralds) is one of my favourite dragonfly families. My love for these green-eyed beauties grew when I started seeing a large number of Williamson’s Emeralds (Somatochlora williamsoni) in Stony Swamp in the summer of 2014; one particular day at the end of June stands out in my memory because I found a total of five emerald species at Jack Pine Trail in one visit (Common Baskettail, Prince Baskettail, Racket-tailed Emerald, Brush-tipped Emerald and Williamson’s Emerald). It was around that time that I realized that I didn’t have to wander too far from home to see such a fantastic variety of wildlife – Stony Swamp in particular is amazing, with the Eagleson storm water ponds close behind. I saw two Williamson’s Emeralds in Stony Swamp in 2018, then none in any subsequent years. The Brush-tipped Emerald population was still present as of last year, with one iNaturalist record (not mine) from Old Quarry Trail on July 1, 2022.

Spring Dragons

Sunny skies, a predicted high of 20°C, and a day off from work on the last Friday in May meant plans to visit Marlborough Forest for the first time this season with my mentor, Chris L. I had convinced her to come with me to trail E4 north of Roger Stevens Drive, home of the Ocellated Emerald, Ashy Clubtail, and Twin-spotted Spiketail – though it was too early for any of those to be flying yet. No less exciting were the possibilities for the early spring dragons that should be on the wing by now: Harlequin Darner, American Emerald, Ebony Boghaunter, and maybe a Springtime Darner or Stream Cruiser. We were sure to see plenty of whitefaces and other skimmers, some baskettails and a Dusky Clubtail or two, and some gossamer-winged butterflies to keep things interesting…the great thing about Marlborough Forest is that it is home to an amazing number of species not easily found in the city, so anything is possible!

The Morris Island Spring Bioblitz

Last year a particular OFNC outing caught my eye: a bioblitz to be held at the Morris Island Conservation Area on September 10th. Morris Island is a fantastic place for a bioblitz; the woodlands and wetlands of this 47-hectare site are home to a number of fascinating wildlife species, including several ode species not regularly found in my area of the city. I had never gone ode-hunting in September there before, as September is past the peak of ode season, with fewer species flying than in June or July. Still, it was a good chance to observe what was still flying there, and maybe find an unusual darner species or two. I attended with Chris T. and Chris L. and we photographed seven species for inclusion on the Morris Island Bioinventory Project on iNaturalist: Skimming Bluet, Eastern Forktail, Fragile Forktail, Powdered Dancer, Halloween Pennant, Autumn Meadowhawk, and White-faced Meadowhawk. So much for finding any cool darners!

Terry Carisse Park in the Summer

Most naturalists who have heard of Terry Carisse Park along the Jock River associate it with birds – particularly the Hooded Warbler that spent a few days there in May 2014. As a rare bird for Ottawa, this discovery put this small riparian park on the map for many Ottawa birders. Other people may associate it with the Osprey nest there, although the Osprey haven’t nested there for a few years now. I myself have returned regularly to this park in the spring and fall to look for the Rusty Blackbirds that often stop over here during migration – in May 2021 I found at least 50 of these declining birds feeding on the lawn and perched in the trees that line the river bank. Because of the thick shoreline vegetation, the wooded swamp to the north, and the open grassy areas dotted with conifers it is a good place to look for birds during migration. I had never been here during the summer breeding season, and it occurred to me this summer that it might be a good spot to look for odonates. I started my summer ode survey on July 2, 2022, continuing through early August, and found more species than I expected – including some species I’ve only seen at Petrie Island or Morris Island Conservation Area!

A Rare Dragonfly at Bruce Pit

Bruce Pit is under-valued as a great spot to see a variety of insects at the peak of summer. Though I’ve spent a lot of time looking for dragonflies there, it can be quite good for tiger beetles and butterflies as well, including Wild Indigo Duskywing, Gray Comma, Painted Lady, Compton Tortoiseshell, and migrating Monarchs. A visit anytime during the summer can usually turn up a few interesting species, and this year I started visiting on June 17th this year, hoping to find a few different insect species for my life list.

Marlborough Forest: Summer 2022

I did not get out to Marlborough Forest as often as I would have liked this past summer; ongoing medical issues early in the season left me feeling too tired and too sore for the long five-hour outings I enjoyed so much last year. On June 2nd I visited the E6 trail with Rick Collins to look for the Sedge Wrens breeding there. We heard one without too much difficulty, though we weren’t able to spot it. Our other highlight was a female Ruffed Grouse on the trail trying to lure us away from its chicks (none seen) by giving distress calls. It was a gray, drizzly day so I didn’t see any insects worth photographing. Indeed, I didn’t take my camera out of my bag at all.

The weather was much better on June 19th, so Chris Traynor and I went to trail E4 to look for Twin-spotted Spiketails and some different emerald species for his life list. I was also eager to show him the pool below the culvert as this was where I’d seen my one and only Ocellated Emerald hanging out in 2020. It was a bit windy, but the sun was shining and the weather was warm, and the breeze made the usual biting insects less of a distraction.

The Last Dragonfly

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

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.