Once migration winds down, many birders stop visiting Mud Lake while they look for breeding birds elsewhere. Although birds such as Wood Duck, American Redstart, Yellow Warbler and Common Ravens are abundant and easy to find at the city’s premier migration hotspot during the breeding season, many of Ottawa’s summer specialties – such as Grasshopper Sparrow, Lincoln’s Sparrow, Golden-winged Warbler, Mourning Warbler, and Sedge Wren – are found elsewhere, and so most birders switch their focus from looking for migrating transients to chasing these summer residents down just as soon as the last Blackpoll Warblers and Arctic Terns disappear in early June. This is about the same time my attention to dragonflies and butterflies intensifies – and Mud Lake is a great place to find a good variety of both these insects.
In most years dragonfly season begins around the Victoria Day weekend (which always falls on the third Monday of May). I remember visiting Mud Lake on the long weekend in years past and seeing up to a hundred freshly emerged dragonflies perching in the trees there. However, in the last few years it seems that dragonfly season has started later than normal – the long-lingering cooler spring weather has played a large part in this, as emergence depends chiefly on the temperature of the water the dragonfly nymphs are living in. By the second weekend of May I’d go out eagerly hoping to see the first dragonflies of the year, and by the end of May I’d still be looking for them. Even when I eventually found some, such as last year, numbers would be low, and it would take time for the season to get back on track. Numbers remained low in Ottawa all summer last year for some reason, though we think that the unprecedented spring flooding might have been the cause, either washing away the small nymphs or dumping unhealthy amounts of debris, sediment, and chemical-laden runoff in areas where they breed.
On June 5th I headed out to Dunrobin to spend some time looking for odes and birds. My first stop was the Crazy Horse Trail on March Road at the end of Huntmar Road. This is a relatively new pedestrian-only trail for hikers, skiers, and snowshoers that was developed by the Friends of the Carp Hills under an agreement with the City of Ottawa. It is named for an old tavern that used to stand adjacent to the trailhead but has long since been demolished. The goal of the trail is to provide recreational access to the the Carp Hills on City-owned property while keeping impact on the environment to a minimum. The trail is narrow, and as there is no intention to groom or widen the trail, people are asked to respect the natural areas by staying on the trail, keeping dogs under control at all times (which means using a leash if necessary), leaving no waste, and respecting property boundaries. There are some rough, volunteer-built boardwalks in places too wet to cross which adds to its charm. In fact, all trail maintenance and improvement depends on volunteers, rather than the City, which makes it doubly important to respect the work they have done in creating this trail.
By the time September rolls around, most odonate species are done for the year in the Ottawa region – gone are the Aurora Damsels and Elegant Spreawings, the Spiny Baskettails and Ebony Boghaunters, the Arrowhead Spiketails and Horned Clubtails, the Chalk-fronted Corporals and Four-spotted Skimmers. This is the time of year when the number of meadowhawks and darners begin to peak, and southern species such as Spot-winged and Wandering Gliders may blow into our region with the warm south winds. A few bluet and spreadwing species may persist, as well as the common and widespread Eastern Forktail, though each day sees fewer and fewer individuals. This is a summary of species I saw and photographed around Ottawa during September 2019 – due to my trip to Edmonton and some cool, cloudy weekends, I didn’t visit as many places as I had hoped and missed a few common species.
On September 18th I flew to Edmonton to visit my sister for a few days. Alberta is not a new province for me; my family had lived on an acreage outside of Ardrossan, which is east of Edmonton and Sherwood Park, for seven years from 1989 to 1996. As I was just teenager at the time, enduring all the drama and angst of high school, I had had no interest in nature back then – which is really too bad, as we’d lived on a small lot with a forest behind our house and a slough (a vegetated pond) across the road. When my parents and I moved back in 1996 – they to southern Ontario, via Tweed, and me and my fiancé to Ottawa – my sister remained behind, although it wasn’t until 2012 when I returned to attend her wedding.
My sister has since divorced and now lives in the north part of Edmonton, in a brand new development called Crystallina Nera. It is so new that there are no trees or gardens yet, several houses have not yet put down any sod, and houses are still being built nearby. This developments boasts a 4.8 hectare urban forest and a naturalized storm water pond, both of which I spent a lot of time exploring.
August isn’t my favourite month to go dragon-hunting; in our region, a number of species have already vanished for the year, including several of my favourite clubtails and emeralds, cruisers and spiketails. August, then, is a season of skimmers and darners, and as such, places like the Eagleson storm water ponds are good places to go dragon-hunting, as these are the most common families of dragonflies that breed here (of the other families mentioned above, only the emeralds are present, and only members of the genus Epitheca, the baskettails). I’ve spent much of my free time this month at the storm water ponds, not just looking for butterflies, but also for new species of odes. It was only two years ago that I discovered new populations of Eastern Amberwings and Saffron-winged Meadowhawks breeding here, and as a number of common species are still scarce or still missing, it is worth checking to see if any have made their way here yet. For a habitat that is quite similar to that of Mud Lake or the ponds at Andrew Haydon Park, it is curious to me that there are no Powdered Dancers, no Horned or Lancet Clubtails, no Halloween or Calico Pennants, no Blue Dashers, and very few Widow Skimmers, Dot-tailed Whitefaces, Eastern Pondhawks, and Common Whitetails. Even spreadwings and dragonflies as abundant as the Autumn Meadowhawk are difficult to find. This is why it is such a surprise that uncommon species such as Eastern Amberwing and Saffron-winged Meadowhawk have become quite common here in late summer.
Back in 2015 I wrote a blog post about the odonates I found at Andrew Haydon Park one weekday afternoon near the end of July. Since discovering the colony of Halloween Pennants at AHP in 2014, I’ve made it a point to visit this park each year during mid-summer; it’s much closer than travelling all the way to Morris Island to see this stunning dragonfly! So far I’ve only made it out to Morris Island once this year, and when I found no Halloween Pennants flying along the causeway I decided to visit Andrew Haydon Park specifically to search for this species. With the strange, slow start to the season I was bit apprehensive about whether these odes would even be around at AHP, but thankfully I found a few on each of my visits, and in good numbers, too.
On July 18th I headed over to the Cedar Grove Nature Trail in Marlborough Forest, as a summer visit was long overdue. After a disappointing visit in June, when a lot of odes and butterflies seemed to be late due to the prolonged cold weather, I was hoping to find some of the early species still flying. To be honest, I had no idea whether insect emergence was still late or back on track, or whether I would even see some of the specialties I was hoping for – such as Calico Pennant, Brush-tipped Emerald, Aurora Damsel, Silvery Checkerspot, fritillaries and more. Regardless, I was looking forward to a change of scenery, and would be happy with whatever I saw.
There weren’t many birds of note, although I was surprised to hear both a Blue-headed Vireo and a Black-throated Green Warbler still singing. It was after 1:00 p.m. by the time I arrived, so not only was it late in the season, but also late in the day. A pair of female or immature Hooded Mergansers near the bridge was a surprise; this was the first time I had seen this species on the pond.
During the first week of July my fiancé and I spent some time in Prince Edward County with my dad’s family. We rented a cottage on Loves Lane on Prince Edward Bay, a nice three-bedroom place with 8 acres of land only 20 minutes away from both Sandbanks and Picton. The weather was beautiful, and I spent most of my time getting to know the local residents. On our first full day at the cottage (Monday, July 1st), I went for an afternoon walk on the property to see what I could find. It seemed to be a good spot for odonates; every now and then a couple of Prince and Common Baskettails flew in and started swooping above the deck. There were some other dragonflies present too, so I brought my net out in the hopes of catching one.
By the end of June it seemed that summer had finally arrived and the weather had returned to normal: the temperature had reached a consistent near 30°C, the state of emergency caused by the unprecedented spring flood had ended on June 12th, water levels were returning to normal, and the sun had finally come out! I was hoping that this meant that the dragonflies were also emerging on schedule again, and decided to head to Mud Lake on the last Saturday of June. Mud Lake is a fantastic place to see dragonflies in mid-summer, as all the dragonfly families except for Cordulegastridae – the spiketails – can be found there. Among the damselfly families both the spreadwings and pond damsels are well-represented; the broad-winged damselflies, mainly Ebony Jewelwings, are seen there from time to time. I had high hopes for my visit.
Usually by the time the Victoria Day long weekend arrives the first odes have emerged – in the past I’ve seen baskettails in large numbers at Mud Lake and whitefaces and emeralds in Stony Swamp. This year has been different. A persistent wind from the north has prevented the daytime temperatures from rising much above 20°C; nighttime temperatures are still in the single digits. As dragonfly emergence depends largely on water temperature, it isn’t surprising that I had only seen one dragonfly before the May long weekend, a Common Green Darner at Parliament Hill on May 6th. This is usually one of the first species I see, as they migrate north from the warm south where they emerge. Temperatures had risen from 10°C on May 3rd to 20°C on the 6th, although the morning had started out as a chilly 5°C – perhaps an influx of warm air brought this gorgeous dragonfly up from somewhere where the north wind and flooding weren’t wreaking havoc on the wildlife.
On August 26th I joined Eastern Ontario Birding’s trip to Presqu’ile Provincial Park. The owner of EOB, Jon, is a friend of mine and got more than he bargained for when he agreed to pick me up at 5:30 am – as soon as he pulled up in front of my house a police car pulled up beside him to ask if he knew anything about a complaint that had been called in. Jon told the officer he was there to pick up a friend to go birding, and the police officer told him that he believed him (the eBird sticker on his car probably hadn’t gone unnoticed, and lent credibility to his statement). The police car drove off just as I was heading out the door, but we saw it stop with two other cruisers on Grassy Plains. Emerald Meadows is a quiet neighbourhood, and I certainly didn’t hear anything at 4:30 in the morning, but it made for a strange start to the day.
The August long weekend is here, and it’s been brutally hot and humid. Temperatures have reached as high as 32°C with a humidex of 41. It didn’t feel quite so hot yesterday, but today was awful. The sun was relentless, and there was no cooling breeze to provide relief. Being in the shade helped, but even so, I didn’t feel like staying out for very long.
We haven’t had much rain in the last month, so the water levels of the Ottawa River have dropped and mudflats are developing in Shirley’s Bay and Ottawa Beach. I wanted to look for shorebirds, but Shirley’s Bay didn’t sound too appealing – a long mosquito-infested walk through the woods to get to the dyke, which is almost completely open to the baking sun – all the while carrying a scope that sometimes feels like it weighs as much as I do. So yesterday I drove over to Andrew Haydon Park instead.
Late this past winter I discovered a new place for birding in my own neighbourhood: Kristina Kiss Park. It really isn’t much of a park; there’s a soccer field at the northern end (Kristina Kiss is a famous Canadian soccer player from Ottawa), a playground at the southern end, and the two are connected by a footpath that runs next to what I consider its most interesting feature: a channel of water that eventually drains into the Eagleson storm water ponds. Last winter I was driving through the area one day when I noticed what looked like an ice-covered pond behind the soccer field. Sure enough, there is a pond in the northeastern corner of the park according to Google maps. When March came and the ice melted, I found my first Killdeer of the year here, and I thought it could be interesting for shorebirds later in migration. However, as the spring progressed, the pond dried up and revealed itself as a large square patch of gravel with no apparent purpose but to collect the run-off from rainwater and snow-melt. The water channel that runs between the footpath and the houses on the next street over turned out to be more interesting, though it was choked with cattails in most places – there were muskrat push-ups scattered throughout, and when the spring returned, I found many of the more common city birds nesting within the vicinity: House Finches, robins, grackles, Red-winged Blackbirds, even a pair of Tree Swallows nesting in a nest box in one of the backyards!
Late July is usually when I start to notice the beautiful golden-hued Wandering Gliders showing up around town. I’ve seen a few around the ponds lately, and spent some time stalking one near the footbridge earlier today. It would follow a predictable path up and down the paved bike path, dropping lower and lower each time. Every time it dropped to about ankle height I thought it would land, but then it would see something and zip off in another direction up to 15 feet above the ground. After a while I gave up, but then when I reached the southern-most pond I found another one. This one landed right in front of me!
Wandering Glider
Wandering Gliders are called “gliders” for a reason – they spend most of their time in flight. First described by Johan Christian Fabricius in 1798, the Wandering Glider (also called the Globe Skimmer) is thought to be the most widespread dragonfly species in the world, found in good numbers on every continent, except Antarctica, and even at sea! Wandering Gliders are migratory, and one individual can fly about 7,000 – 8,000 km. A study published in 2016 showed that there is very little genetic difference between gliders caught in different parts of the world, suggesting that this species forms one large, interbreeding global population rather than several distinct, discrete populations which do not interact.
The Wandering Glider is part of a group known as the “rainpool gliders”. They need fresh water to breed, such as ponds and temporary pools, which is what they are searching for on these long journeys – they follow shifting weather and rainfall patterns so that they are able to reproduce year-round. This strategy differs from most members of the skimmer family, which emerge as adults in May or June and reproduce until the adult population dies out two or three months later. For example, the study noted that once the dry season begins in India, individuals migrate to Africa just as the rainy seasons is starting there.
Although the Wandering Glider is one of the larger members of the skimmer family, at about 2 inches it is still a tiny insect with wings smaller than that of the Monarch butterfly, whose famous 4,000 km winter journey is much better known and understood. This made me wonder where the two individuals I saw came from, and whether they planned to stay and breed at the ponds for the rest of their adult lives, or if they were just stopping by on their way to somewhere else.
OdoNotations 