Chroicocephalus ridibundus (Linnaeus, 1766)
(Black-headed Gull)

Taxonomic hierarchy:
SpeciesChroicocephalus ridibundus (Black-headed Gull)
GenusChroicocephalus (a genus of birds)
FamilyLARIDAE (sea gulls)
OrderCHARADRIIFORMES (plovers and sea birds)
ClassAVES (birds)
SuperclassTETRAPODA (a superclass of unassigneds)
PhylumCHORDATA (vertebrates)
SuperphylumDEUTEROSTOMIA (deuterostomes)
CladeBilateria (bilaterally symmetrical animals)
SubkingdomEUMETAZOA (metazoans)
KingdomANIMALIA (animals)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Chroicocephalus ridibundus (Black-headed Gull) :
1: Chroicocephalus ridibundus (Black-headed Gull)
17 Mar 2017 OSGR: ST80 50° 50’ N, 2° 10’ W Vice County: Dorset (VC 9) England
summer plumage
Image 1: Summer plumage - in flight - dorsal viewImage 2: Summer plumage - in flight - posterior view
2: Chroicocephalus ridibundus (Black-headed Gull)
17 Mar 2017 OSGR: ST80 50° 50’ N, 2° 10’ W Vice County: Dorset (VC 9) England
summer plumage
Image 1: Adult - summer plumage - in flight - lateral viewImage 2: Adult - summer plumage - on water - front three-quarter viewImage 3: Adult - summer plumage - on water - lateral view
3: Chroicocephalus ridibundus (Black-headed Gull)
17 Mar 2017 OSGR: ST80 50° 50’ N, 2° 10’ W Vice County: Dorset (VC 9) England
first winter juvenile
Image 1: First winter juvenile - in flight - lateral viewImage 2: First winter juvenile - in flight - postero-lateral view
4: Chroicocephalus ridibundus (Black-headed Gull)
29 Feb 2016 OSGR: SZ09 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
Intermediate plumage - nearly in breeding plumage
Image 1: Nearly in breeding plumageImage 2: Nearly in breeding plumage (2)Image 3: Nearly in breeding plumage (3)Image 4: Nearly in breeding plumage (4)Image 5: Nearly in breeding plumage (5)Image 6: Nearly in breeding plumage (6)
5: Chroicocephalus ridibundus (Black-headed Gull)
25 Nov 2015 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
3 adults in winter plumage
Image 1: 3 adults in winter plumage
6: Chroicocephalus ridibundus (Black-headed Gull)
22 Apr 2015 OSGR: SZ08 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
adult, in breeding plumage
Image 1: Adult - breeding plumage - on waterImage 2: Adult - breeding plumage - on water (2)Image 3: Adult - breeding plumage - on water (3)Image 4: Adult - breeding plumage - side view
7: Chroicocephalus ridibundus (Black-headed Gull)
22 Apr 2015 OSGR: SZ09 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
adult, in breeding plumage
Image 1: Adult - breeding plumage - rear viewImage 2: Adult - breeding plumage - side viewImage 3: Adult - breeding plumage - side view and facingImage 4: Adult - breeding plumage - side view, looking downImage 5: Adult - breeding plumage - wings outstretched during landingImage 6: Adult - breeding plumage - wings outstretched during landing (2)Image 7: Adults - breeding plumage - side view
8: Chroicocephalus ridibundus (Black-headed Gull)
7 Apr 2015 OSGR: SZ08 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
Image 1: Summer plumage - lateral views
9: Chroicocephalus ridibundus (Black-headed Gull)
16 Mar 2015 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Adult, moulting
Image 1: Adult - part-way to summer plumage - lateral viewImage 2: Adult - part-way to summer plumage - lateral view (2)Image 3: Adult - part-way to summer plumage - lateral view (3)Image 4: Adult - part-way to summer plumage - lateral view (4)
10: Chroicocephalus ridibundus (Black-headed Gull)
16 Mar 2015 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Adult, summer plumage
Image 1: Adult - summer plumageImage 2: Adult - summer plumage - lateral viewImage 3: Adult - summer plumage - sitting - lateral view
11: Chroicocephalus ridibundus (Black-headed Gull)
16 Mar 2015 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Adult, summer plumage
Image 1: Adult - summer plumageImage 2: Adult - summer plumage (2)Image 3: Adult - summer plumage - in flight - lateral viewImage 4: Adult - summer plumage - landing on water - posterior viewImage 5: Adult - summer plumage - lateral viewImage 6: Adult - summer plumage - lateral view (2)Image 7: Adult - summer plumage - lateral view (3)Image 8: Adult - summer plumage - on waterImage 9: Adult - summer plumage - on water - lateral viewImage 10: Adult - summer plumage - on water - lateral view (2)
12: Chroicocephalus ridibundus (Black-headed Gull)
16 Mar 2015 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Immature, summer plumage
Image 1: First winter juvenileImage 2: First winter juvenile - landing off on water - lateral viewImage 3: First winter juvenile - landing on water - rear three-quarter viewImage 4: First winter juvenile - lateral viewImage 5: First winter juvenile - lateral view (2)Image 6: First winter juvenile - on waterImage 7: First winter juvenile - on water - front viewImage 8: First winter juvenile - on water - lateral viewImage 9: First winter juvenile - on water - lateral view (2)Image 10: First winter juvenile - on water - lateral view (3)Image 11: First winter juvenile - on water - lateral view (4)Image 12: First winter juvenile - on water - lateral view (5)
13: Chroicocephalus ridibundus (Black-headed Gull)
3 Jan 2015 OSGR: SZ08 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
Adult, on beach
Image 1: Adult - winter plumage - wings spread - posterior view
14: Chroicocephalus ridibundus (Black-headed Gull)
3 Jan 2015 OSGR: SZ08 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
Adult, on beach
Image 1: Adult - winter plumage - lateral view
15: Chroicocephalus ridibundus (Black-headed Gull)
31 Dec 2014 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Adult, in unseasonal summer plumage
Image 1: Adult - summer plumage - lateral view
16: Chroicocephalus ridibundus (Black-headed Gull)
31 Dec 2014 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Adult, in flight
Image 1: Adult - winter plumage - in flight - ventral view
17: Chroicocephalus ridibundus (Black-headed Gull)
31 Dec 2014 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
in flight
Image 1: Adult - winter plumage - in flight - lateral viewImage 2: Adult - winter plumage - in flight - lateral view (2)Image 3: Adult - winter plumage - in flight - lateral view (3)Image 4: Adult - winter plumage - in flight - lateral view (4)Image 5: Adult - winter plumage - in flight - lateral view (5)Image 6: Adult - winter plumage - in flight - ventro-lateral view
18: Chroicocephalus ridibundus (Black-headed Gull)
31 Dec 2014 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Adult, winter plumage, on water
Image 1: Adult - winter plumage - on water - anterior viewImage 2: Adult - winter plumage - on water - lateral view
19: Chroicocephalus ridibundus (Black-headed Gull)
21 Dec 2014 OSGR: SZ19 50° 40’ N, 1° 50’ W Vice County: South Hants (VC 11) England
Adult in winter plumage
Image 1: Adult - winter plumage - callingImage 2: Adult - winter plumage - calling - face viewImage 3: Adult - winter plumage - head retractedImage 4: Adult - winter plumage - head retracted - lateral viewImage 5: Adult - winter plumage - head retracted - lateral view (2)Image 6: Adult - winter plumage - lateral view
20: Chroicocephalus ridibundus (Black-headed Gull)
21 Dec 2014 OSGR: SZ19 50° 40’ N, 1° 40’ W Vice County: South Hants (VC 11) England
Adults, in flight
Image 1: Two adults - winter plumage - in flight over mixed flockImage 2: Two adults - winter plumage - in flight over mixed flock (2)
21: Chroicocephalus ridibundus (Black-headed Gull)
30 Nov 2014 OSGR: SZ09 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
perched on post, in winter plumage
Image 1: Adult - winter plumage - anterior viewImage 2: Adult - winter plumage - anterior view (2)Image 3: Adult - winter plumage - front three-quarter viewImage 4: Adult - winter plumage - lateral view
22: Chroicocephalus ridibundus (Black-headed Gull)
30 Nov 2014 OSGR: SZ09 50° 40’ N, 1° 60’ W Vice County: Dorset (VC 9) England
first winter, perched on post
Image 1: First winter juvenile - rear three-quarter viewImage 2: First winter juvenile - rear three-quarter view (2)
23: Chroicocephalus ridibundus (Black-headed Gull)
31 Oct 2014 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
first winter juvenile, in car park
Image 1: First winter juvenile - lateral viewImage 2: First winter juvenile - lateral view (2)Image 3: First winter juvenile - lateral view (3)Image 4: First winter juvenile - lateral view (4)Image 5: First winter juvenile - lateral view (5)Image 6: First winter juvenile - posterior viewImage 7: First winter juveniles - rear three-quarter views
24: Chroicocephalus ridibundus (Black-headed Gull)
31 Oct 2014 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
adult, in car park
Image 1: Adult - winter plumage - anterior viewImage 2: Adult - winter plumage - feeding in puddle - anterior view, with reflectionImage 3: Adult - winter plumage - feeding in puddle - anterior view, with reflection (2)Image 4: Adult - winter plumage - lateral viewImage 5: Adult - winter plumage - lateral view (2)Image 6: Adult - winter plumage - lateral view (3)Image 7: Adult - winter plumage - lateral view (4)Image 8: Adult - winter plumage - lateral view (5)Image 9: Adult - winter plumage - lateral view (6)Image 10: Adult - winter plumage - paddling - anterior viewImage 11: Adult - winter plumage - paddling - anterior view, with reflectionImage 12: Adult - winter plumage - paddling - anterior view, with reflection (2)Image 13: Adult - winter plumage - paddling - anterior view, with reflection (3)Image 14: Adult - winter plumage - paddling - posterior viewImage 15: Adult - winter plumage - paddling - rear three-quarter viewImage 16: Adult - winter plumage - pecking ground - anterior viewImage 17: Adult - winter plumage - pecking ground - lateral viewImage 18: Adult - winter plumage - posterior viewImage 19: Looking for parasites - anterior view, with reflection
25: Chroicocephalus ridibundus (Black-headed Gull)
31 Oct 2014 OSGR: SY67 50° 40’ N, 2° 30’ W Vice County: Dorset (VC 9) England
Image 1: Adult - winter plumage - on water - lateral view
26: Chroicocephalus ridibundus (Black-headed Gull)
19 Jun 2008 OSGR: TQ91 50° 60’ N, 0° 50’ E Vice County: East Sussex (VC 14) England
Sitting in car park, in summer plumage
Image 1: Adult - summer plumage - in flightImage 2: Adult - summer plumage - in flight (2)Image 3: Adult - summer plumage - sitting and in flight

Chroicocephalus ridibundus (Black-headed Gull) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Chroicocephalus ridibundus (Black-headed Gull)
BioInfoBioInfo (www.bioinfo.org.uk) has 1 host/parasite/foodplant and/or other relationships for Chroicocephalus ridibundus (Black-headed Gull)
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