jhn7's picture

Winter Black-headed Gulls

Observed: 13th November 2010 By: jhn7
S159 Neighbourhood Nature - course complete
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P1090325-1
P1090324-1
Description:

Sentinels as the sun sets ready for any late titbits. White front, grey wings, red legs and dark ear spot.

Identifications
Species interactions

No interactions present.

Comments

camelhuish's picture

Larus ridibundus now Chroicocephalus ridibundus?

Has the Latin name been changed recently? On BTO website it's listed as Chroicocephalus,(formerly Larus) presumably to reflect its chocolate coloured rather than black head?

jhn7's picture

Sorry I don't know.

My Collins Bird Guide is the 2001 edition so may be out of date but I did check on the RSPB website where it is still Larus ridibundus. I looked on the BTO website but as you say it does not give further guidance and Wikipedia has the changed version. Can anyone give a definitive answer?

Janet
Certificate in Contemporary Science (Open)

vs4369's picture

Chroicocephalus ridibundus

Collins 2nd edition gives the above latin name. I think there is reclassification happening due to dna studies changing the view of which birds are more closely related to each other.

VS4369

jhn7's picture

Thanks!

I'm a bit behind the times!

Janet
Certificate in Contemporary Science (Open)

RoyW's picture

Chroicocephalus is now widely accepted as the name.

This has been discussed on Ispot in the past (eg. http://ispot.org.uk/node/76961 ).

Chroicocephalus ridibundus is now accepted as the scientific name for Black-headed Gull by most ornithological authorities, and will be the name that is used in most (all??) good quality newly published field guides. There is a link breifly explaining the reasons for the change in one of my comments under the observaton linked here.
Larus ridibundus does remain a correct name for Black-headed Gull (the name cannot be used for any other species), but it is now out of date.

jhn7's picture

Thanks!

That is clear now.

Janet
Certificate in Contemporary Science (Open)

anonymous spotter's picture

Whatever the systematic name of the beast -

the pictures, especially the first one, are very good.

jhn7's picture

How kind of you!

I have grumbled before about the difficulties of photographing birds so I am pleased you like these efforts!! Now I will admit to being in the car in the Quay car park with the window open!!

Janet
Certificate in Contemporary Science (Open)

Ray Turner's picture

Cars ...

... often provide one of the best hides available :-)

Ray

Ray