🐦 Bird Migration Map

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Eurasian blackcap migration Sylvia atricapilla

line = simplified typical route through the year (from GBIF records) Ā· arrows = direction of travel
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ā–¶ Follow the Eurasian blackcap across the big globe

Press ā–¶ to play the year. Line: a simplified typical route, joining the main cluster of GBIF records in each month (adjusted for observer effort).

Eurasian blackcap
Photo: Ron Knight from Seaford, East Sussex, United Kingdom, CC BY 2.0, via Wikimedia Commons
Scientific nameSylvia atricapilla
Wingspan23 cm
Adult weight18.1 g (adult)
IUCN statusLeast concern
Records mapped4,197,199 (GBIF)
GPS / geolocator tracksnone with an open licence yet

Facts from Wikidata Q188446 (CC0).

When does the Eurasian blackcap arrive in the UK?

Recorded in the UK in every season, so the records do not show one clear arrival date.

JanFebMarAprMayJunJulAugSepOctNovDec

Bars: this species’ share of all UK bird records in GBIF (CC0/CC BY), by month, scaled to the peak month. Based on 384,187 UK records. Weekly counts from the GBIF occurrence search API (country=GB). Dates are read from records, not from a survey, so treat them as a guide.

Migration in the data

4,197,199 GBIF records (CC0 and CC BY 4.0 licences only) are mapped here, in 1.41° grid cells, month by month.

In Europe and Africa, the centre of the records (adjusted for observer effort) is furthest north in June (about 48°N) and furthest south in February (about 39°N).

Month by month: centre of records in Europe and Africa
MonthCentre (latitude)South of the Equator
January40°N1%
February39°N1%
March40°N0%
April44°N0%
May47°N0%
June48°N0%
July48°N0%
August47°N0%
September47°N0%
October45°N0%
November43°N1%
December41°N1%

Tracked birds

No openly licensed (CC0 / CC BY) tracking data package for this species was found in the Movebank Data Repository yet, so only records are shown.

About the Eurasian blackcap

The Eurasian blackcap is a bird usually known simply as the blackcap. It is a common and widespread warbler. It has mainly olive-grey upperparts and pale grey underparts, and differences across the five subspecies are small. Both sexes have a neat coloured cap to the head, black in the male and reddish-brown in the female. …

From the Wikipedia article ā€œEurasian blackcapā€ (revision 1359675334), CC BY-SA 4.0.

Sources

GBIF occurrence records, licence CC0 1.0 or CC BY 4.0 only, observations only (no specimens), filtered with: taxonKey=2492956&license=CC0_1_0&license=CC_BY_4_0&occurrenceStatus=PRESENT&hasGeospatialIssue=false&basisOfRecord=HUMAN_OBSERVATION&basisOfRecord=MACHINE_OBSERVATION&basisOfRecord=OBSERVATION. Monthly queries: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec. GBIF.org (23 October 2026) occurrence data accessed via the GBIF API; a GBIF download DOI is still to be added. Contributing datasets.