Watching dragonflies and butterflies: a beginner’s guide

In July, you can start close to home, without a net and without naming everything. On 9, 10 and 11 July 2026, I was in the west of the Côtes-d’Armor, in Brittany. What worked for me came down to three things: a path sheltered from the wind, a sunny riverbank, and photos between 9.30am and mid-afternoon.

The real progress was accepting incomplete names. ‘A white’ or ‘a blue damselfly’ is already an answer.

Where to go when the coast is too windy?

On 9 July, I tried a stretch of coast path, facing the sea. After half an hour, almost nothing was flying. The wind was flattening the grass. I put the camera away. The date wasn’t wrong. The place was, that day.

On the morning of 10 July, I was at the Quellen marsh, in Trébeurden. It’s a freshwater marsh behind a line of dunes. The tourist office’s page describes 22 hectares of reedbeds, wet meadows and woodland, with Camargue horses on two thirds of the site [1, 2]. The path is about 1.4 miles (2.3 km) long, with 17 m of ascent. Without stopping, it takes 1 hour [1]. It took me nearly two.

There’s a hide, designed more with birds in mind. I found the insects lower down, on the brambles and the flowers along the edge.

I stayed on the waymarked path. I didn’t go into the grazed area, and I didn’t approach the horses. In July and August, the same page lists guided tours about the horses and the plants [1]. It doesn’t give the 2026 dates. I didn’t go on one. Worth checking before you travel.

The Quellen gave me butterflies. Few dragonflies to be seen from the path. Before midday, the wind off the sea got up. The butterflies tucked themselves deep into the brambles. I stopped.

In the afternoon, I moved on to a public riverbank in the Léguer valley, out of the wind. I won’t give an exact spot: I stayed on the path, without going into the meadows. There, running water and a small sunny pond did what the marsh, seen from the path, hadn’t. Damselflies on the rushes. A big dragonfly on patrol. DemoisellesDamselflies of running water, with metallic bodies; the males have coloured wings. perched on the bankside plants.

The Léguer’s Natura 2000 site, part of the EU’s network of protected areas, is far richer than my list. Its page names, among others, the Large Chequered Skipper, the Heath Fritillary and the Queen of Spain Fritillary, and among the dragonflies the Scarce Emerald Damselfly, Boyeria irene, two clubtails and the Black Darter [3]. I didn’t look for them. A first outing isn’t for ticking off the discreet species.

What time do they actually settle?

On 10 July 2026, the Météo-France weather station at Lannion recorded 18 to 31 °C, and on 11 July 18 to 28 °C [4, 5]. Here’s what those three days showed me, not a rule for the whole of Brittany. On the day: short sleeves in the shelter in the early afternoon, a light jacket as soon as the wind picked up again on the coast.

From 9.30am to 11am, the insects were still perched. That’s when I took my sharp photos. At the Quellen, that window lasted until the sea breeze got up.

Between midday and 4pm, in the sun and out of the wind, there was more flying. I saw the comings and goings better. My photos were worse. A dragonfly patrolling without landing is something to watch. And, very often, to miss.

After 5pm, just one attempt. Fewer insects, lovely light on the plants, a Meadow Brown at rest. Good for looking at plants. Poor for dragonflies, that day.

If there’s a strong wind or thick cloud, I go home. Forcing an hour on an empty path teaches you nothing. On 11 July, with big clouds at times in a mostly clear sky, the sheltered valley worked better than the coast.

As for the calendar, July fell within the periods I checked. The Meadow Brown flies from late May to September [6]. The Swallowtail, from February to October depending on the climate [7]. The Baie de Saint-Brieuc nature reserve’s species page gives adult Beautiful Demoiselles from late May to early September [8]. I don’t make it a rule for the whole Côtes-d’Armor. It fitted my dates. A calm, sunny day counted for more than the date on the calendar.

What earned its place in the rucksack?

No net. No collecting box. My usual camera, with a zoom lens, and my phone.

I stayed 2 or 3 m away when the insect let me. For a damselfly on a rush, I knelt down. For a green caterpillar on a leaf, I got down on all fours. I didn’t name it. The photo is blurred, and I kept it anyway.

Two apps, for different jobs.

ObsIdentify gave me a first lead from a photo [9]. I treat it as a hypothesis. A high score isn’t a confirmation.

INPN Espèces, the app from France’s National Museum of Natural History, does something else. You can see what’s known around a place in France. You can also send in a sharp photo, with the date, the place and the group. Experts confirm, or correct [10]. It’s slow. That’s exactly why I keep it for the evening, not for settling things on the path.

In the evening, two guides. For butterflies, Tristan Lafranchis’s Papillons de France (Diatheo, 2016), in French. The book is out of print. The publisher offers the PDF free for personal, non-commercial use [11]. I opened it at home, not out in the sun. For dragonflies, Dijkstra and Lewington’s guide, published in French by Delachaux (Guide des libellules de France et d’Europe), the one France’s LPO cites in its species pages [12]. Too big for a pocket. Very clear at the table.

Long, light-coloured trousers and closed shoes. Not for style. For ticks, and for brambles. More on that below.

Which names could I keep?

A word first. Dragonflies and damselflies together make up the order Odonata. Damselflies hold their wings together above the body at rest; true dragonflies rest with their wings spread out [12]. The pterostigma is the small coloured cell near the wingtip. An eyespot is the round spot that looks like an eye, on the wings of some butterflies.

Butterflies, only when the feature showed on the photo.

The Peacock, wings open, with its big eyespots. No doubt about it, on a bramble at the Quellen.

The Red Admiral, red bands on black. Same place, a little later. It landed, flew off, came back. I waited. That’s often the secret. Not a camera setting.

The Meadow Brown, Maniola jurtina. Orangey brown, a black eyespot near the tip of the forewing. Wingspan 39 to 46 mm, according to the LPO. Very common, not protected in France, one generation a year, from late May to September [6]. I saw several in the grass along the path. The male usually has a single small white dot in the eyespot. The female often has more orange, and two white dots [6]. I remember that sentence, because it saved me from a blunder. I’ll come to that.

Enlarge photo

The Swallowtail, Papilio machaon, on 11 July, on a wild carrot beside a sunny path. Yellow ground, black markings, blue crescents, a red spot, tails on the hindwings. Wingspan 63 to 75 mm. Not protected in France. The LPO gives it from February to October, with caterpillars on various umbellifers, including wild carrot, fennel and parsley [7]. That one, I can name. It stayed. So did I.

Enlarge photo

A female Brimstone. Leaf-shaped wings, pale, with no black tip. I nearly called it a white. The evening guide settled it. A male, bright yellow, same leaf shape, would have been quicker.

The Speckled Wood, in the shade of the sunken lane. Cream spots, short flights from one patch of sunlight to the next. I already know it from woodland edges. I didn’t go looking for it elsewhere.

The Small Copper, small and orange, on a low flower. A clear feature on the photo, confirmed in the evening.

Dragonflies and damselflies: same rule.

A male demoiselle, on the sunny bank. A broad dark band across the wing, about a thumb’s width, not covering the whole wing. That matches the Banded Demoiselle, Calopteryx splendens, as the LPO describes it: sunny running water, banks at least partly covered in plants. The extent of the band varies between populations [12]. If the photo is ambiguous, I don’t decide.

Enlarge photo

The next day, on a shadier stretch, a male with wings almost entirely tinted blue-green. The Baie de Saint-Brieuc nature reserve puts it simply: in the Banded Demoiselle, a large oval patch. In the Beautiful Demoiselle, Calopteryx virgo, the male’s wing is entirely smoky [8]. I kept ‘Beautiful Demoiselle’ for that male. Not for the females nearby. With them, the feature is the position of a white spot near the wingtip [8]. I couldn’t see it well enough.

A small damselfly, bronze-black abdomen, blue eighth segment, two-tone pterostigma. That’s how Écrins National Park, in the French Alps, describes the male Blue-tailed Damselfly, Ischnura elegans, which it records from May to September on sunny, slow-flowing water [13]. The female changes colour with age. I only named the male whose blue segment showed.

Enlarge photo

A blue dragonfly, with a very broad, flattened abdomen and dark patches at the base of the wings, perched at the edge of a pond. In the evening, the guide told it apart from the slimmer skimmers, the Orthetrum. I kept ‘Broad-bodied Chaser’, Libellula depressa, only for the photos where both details were clear.

A big dragonfly, green thorax, blue abdomen, patrolling without landing. The guide fitted the Emperor Dragonfly, Anax imperator, better than the Lesser Emperor, Anax parthenope. The photo is poor. I write ‘Anax, probably Emperor’. I don’t submit it as a confirmed record.

Where did I go wrong?

First, the whites. On the first day, I called everything a Large White. In the evening, the guide showed several white species, not one. Size, the shape of the black patch at the wingtip, the veins underneath. My eye isn’t sure enough yet. Now I write ‘a white’. If I have the underside of the wings, I attach it. If not, I stop there.

Next, the Meadow Brown and the Gatekeeper. I thought an eyespot with two white dots was enough to rule out a Meadow Brown. The LPO’s page says otherwise for the female. Two white dots, more orange: it can still be a Meadow Brown [6]. I probably saw Gatekeepers. I didn’t name them. A doubtful orangey brown stays ‘Meadow Brown or Gatekeeper’.

Then the blues. ObsIdentify suggested a particular blue from a photo taken from above. I didn’t have the underside of the wings, the side with the small spots. I deleted the species name. ‘A blue’ is enough. Females are often brown. A blue seen from above, without the underside, isn’t a record.

Same with the reds. I saw darters at rest. I didn’t separate the species. The thorax in profile, the legs, the black markings: I lack the practice, and often the photo. ‘A darter’ is the right level. The Léguer page lists the Black Darter, which isn’t the classic red one of ponds [3]. One more reason not to guess.

Finally, the apps. A lead, yes. A name to publish, no, as long as the feature isn’t on the photo and no guide or reviewer has backed it up. INPN Espèces is built for that: correction is part of the system [10]. Being corrected isn’t a failure.

What to photograph before putting the camera away?

A short list. I wrote it down after missing too many wing undersides.

If it flies off, I stop. I don’t follow it into tall vegetation. A missed photo can be taken another day. A trampled meadow can’t.

What not to do, even for a great photo?

I don’t catch anything, protected or not. Photographing isn’t catching.

Two species deserve a mention, because you could come across them while wanting ‘just a closer look’. The Marsh Fritillary, Euphydryas aurinia, was found in 2010 in a meadow at Belle-Isle-en-Terre, in the Léguer valley. Its presence is tied to its host plant, devil’s-bit scabious [3]. The Southern Damselfly, Coenagrion mercuriale, is a small blue damselfly, easy to confuse with others.

When you’re starting out, you can’t sort that out on the spot. So no net, no hands on the insect. If you want to handle insects, that’s not a weekend method. It takes training, with someone who knows what they’re allowed to do.

The Meadow Brown and the Swallowtail aren’t protected in France [6, 7]. That doesn’t change how I go about it. I photograph them; I don’t take them.

At the Quellen, the site is grazed. The path is the way to go. I kept to it, and I won’t tell you that leaving the route does no harm. For the horses as much as for the wet meadows, I stick to the waymarks.

In France, ticks are active from March to November, mostly in fairly damp areas such as woodland, but also in fields, meadows and gardens. Santé publique France, the French national public health agency, says so on a page updated on 2 August 2024 [15]. Lyme disease is found throughout France. In 2023, nearly 39,000 cases were diagnosed by GPs, or 59 cases per 100,000 inhabitants. Cases are more frequent in the east and centre of the country than in the west [15]. That’s no reason to skip the check.

I kneel to take photos. That means more contact with the grass. Hence the light-coloured trousers, and the check in the evening. I’m not saying that’s enough in every case.

In the evening, at the table

I sort the photos before I go looking for names. The ones where the feature shows on one side. The ones that stay at genus level on the other. A few go off to INPN Espèces, with the date and place, to be checked [10]. I don’t submit a confirmed record when the photo doesn’t show the detail.

The Swallowtail of 11 July stayed on the wild carrot. So did I. My travelling companion ended up sitting down in the frame. In the last photo, you mostly see his shoes, and a bit of yellow wing. It’s my favourite photo of those three days. It doesn’t deserve a species name, and it taught me more than the list.

Joséphine Garand

Nature, photography, walks and travel

Joséphine loves nature for its beauty: walks, photography, travel, nights in a campervan or glamping. Neither an expert nor particularly sporty, she writes and reviews with a newcomer’s eye, which is invaluable for all our content aimed at beginners.

All their articles