Rapala caerulea
In 3 days ~10% in a week ~20%
Rapala caerulea, the bush clover, is a butterfly of the family Lycaenidae. It was described by Otto Vasilievich Bremer and William Grey in 1851. It is found in north-eastern and central China, Taiwan, Korea and the Russian Far East.
The length of the forewings is 16–17 mm. The wings are light blue with a dark border, strongly widened on the forewings of females. The larvae feed on Rosa multiflora and Rhamnus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Bush Clover sighting in Beijing on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 349th most-seen of the 401 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
In that month about 10% of wildlife watchers report a Bush Clover in Beijing on a given day, against under 5% in September to July, the lowest months. That is one of Beijing's wettest months, with about 110 mm of rain against almost none in January.
Among the best
Of the 2 cities where we can rate Bush Clover sightings, Beijing ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Seoul (South Korea, under 5%).
GBIF citizen-science records
It is estimated from how often the Bush Clover is recorded against all the insects logged in Beijing (5 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.
