Colias hyale
In 3 days ~10% in a week ~20%
Colias hyale, the pale clouded yellow, is a butterfly of the family Pieridae, (also known as the yellows and whites) which is found in most of Europe and large parts of the Palearctic. It is a rare migrant to the British Isles and Scandinavia. The adult wingspan is 52–62 millimetres (2.0–2.4 in).
The upperside of the male is more or less light lemon yellow, with the black marginal and submarginal bands more or less complete on both wings; the black middle spot of the forewing large, in centre of hindwing an orange-yellow double spot; base of wings more or less dusted with black. The underside is bright yellow, being somewhat lighter on the forewing, with small marginal and larger submarginal red-brown spots; the middle spot of the forewing black with pale centre, the hindwing bearing a double spot which is mother-of-pearl colour, encircled by a double ring of red brown; fringes above and beneath, as well as head and antenna red brown. In the female the ground colour of the upperside and the proximal area of the underside of the forewing is white, being slightly yellowish.
The egg is bottle shaped, whitish, with yellowish-brown stripes. The larva is bluish green or... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Novosibirsk | 🇷🇺 Russia | |
| 2 | Warsaw | 🇵🇱 Poland | |
| 3 | Berlin | 🇩🇪 Germany | |
| 4 | Prague | 🇨🇿 Czechia | |
| 5 | Moscow | 🇷🇺 Russia | |
| 6 | Saint Petersburg | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Pale Clouded Yellow sighting in Prague on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 377th most-seen of the 724 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
August and September
In those months about 10% of wildlife watchers report a Pale Clouded Yellow in Prague on a given day, against under 5% in October to July, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Pale Clouded Yellow sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
4th of 6
Of the 6 cities where we can rate Pale Clouded Yellow sightings, Prague ranks 4th at under 5%. The best odds are in Novosibirsk (Russia, about 10%), Warsaw (Poland, about 10%) and Berlin (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Pale Clouded Yellow is recorded against all the insects logged in Prague (13 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
