Bird - Dartford Warbler - art postcard by Bennett c.1970s

• Postcard

   

• Picture / Image:  Dartford Warbler 
• Publisher: Bennett Publications (8012)
• Postally used: no
• Stamp:  n/a
• Postmark(s): n/a
• Sent to:  n/a
• Notes / condition: 

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Text from the free encyclopedia WIKIPEDIA may appear below to give a little background information (internal links may not  work) :

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The Dartford warbler (Curruca undata) is a typical warbler from the warmer parts of western Europe and northwestern Africa. It is a small warbler with a long thin tail and a thin pointed bill. The adult male has grey-brown upperparts and is dull reddish-brown below except for the centre of the belly which has a dirty white patch. It has light speckles on the throat and a red eye-ring. The sexes are similar but the adult female is usually less grey above and paler below.

Its breeding range lies west of a line from southern England to the heel of Italy (southern Apulia). The Dartford warbler is usually resident all year in its breeding range, but there is some limited migration.

The Dartford warbler was first described by the Welsh naturalist Thomas Pennant. He based his description on two specimens that obtained by the ornithologist, John Latham in April 1773 on Bexley Heath, near Dartford in Kent.[2][3][4] Pennant asked Latham to name the new and till then unnamed bird, and Latham chose Sylvia dartfordiensis, or Dartford Warbler.[5] The species was assigned the binomial name of Motacilla undata by the Dutch naturalist Pieter Boddaert in 1783 based on a coloured plate in Edmé-Louis Daubenton's Planches enluminées d'histoire naturelle.[6][7]

John Latham, in 1816

The specific undata is from Medieval Latin undatus, "with wavy markings".[8]

The type locality of the Dartford warbler is Provence in France. This species probably forms a superspecies with Tristram's warbler and this in turn seems close to Marmora's warbler and the Balearic warbler.[9][10] Altogether, this group of typical warblers bears a resemblance to the wrentit, the only species of Sylviidae from the Americas. However the wrentit is less closely related to the genus Sylvia than to the parrotbills.[11][12] Its visual similarity to the Dartford warbler group is an example of convergent evolution.

Three subspecies are recognised:[13][14]

C. u. dartfordiensis Latham, 1787 – south England and north-west France[15][16]

C. u. toni Hartert, 1909 – north-west Africa[15][17]

C. u. undata (Boddaert, 1783) – Iberian Peninsula and south France[6][15]

The species is naturally rare. The largest European populations of Curruca undata are in the Iberian peninsula, others in much of France, in Italy and southern England and south Wales. In Africa it can be found only in small areas in the north, wintering in northern Morocco and northern Algeria.