Wryneck

The wrynecks (genus Jynx) are a small but distinctive group of small Old World woodpeckers. Jynx is from the Ancient Greek iunx, the Eurasian wryneck.

These birds get their English name from their ability to turn their heads almost 180°. When disturbed at the nest, they use this snake-like head twisting and hissing as a threat display. It has occasionally been called "snake-bird" for that reason.<ref name="EB1911">Template:Cite EB1911</ref>

Like the true woodpeckers, wrynecks have large heads, long tongues, which they use to extract their insect prey, and zygodactyl feet, with two toes pointing forward and two backwards, but they lack the stiff tail feathers that the true woodpeckers use when climbing trees, so they are more likely than their relatives to perch on a branch rather than an upright trunk. The sexes have a similar appearance.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Their bills are shorter and less dagger-like than in the true woodpeckers, but their chief prey is ants and other insects, which they find in decaying wood or almost bare soil. They reuse woodpecker holes for nesting, rather than making their own holes. The eggs are white, as with many hole nesters.

The two species have cryptic plumage, with intricate patterning of greys and browns. The adult moults rapidly between July and September, although some moult continues in its winter quarters.<ref>RSPB Handbook of British Birds (2014). UK. Template:ISBN.</ref>

Taxonomy and etymology

The woodpeckers are an ancient bird family consisting of three subfamilies, the wrynecks, the piculets and the true woodpeckers, Picinae. DNA sequencing and phylogenetic analysis show that the wrynecks are a sister clade to other woodpeckers including the Picinae and probably diverged early from the rest of the family.<ref name="gorman3">Gorman (2022) p. 3.</ref>

The wryneck subfamily Jynginae has one genus, Jynx, introduced in 1758 by Swedish naturalist Carl Linnaeus in the 10th edition of his Systema Naturae.<ref>Template:Cite book</ref> Linnaeus placed a single species in the genus, the Eurasian wryneck (Jynx torquilla), which is therefore the type species.<ref>Template:Cite book</ref> The genus name Jynx is from the Ancient Greek name for the Eurasian wryneck, ιυγξ, iunx, and ruficollis is from the Latin {{#invoke:Lang|lang}}, "rufous" and {{#invoke:Lang|lang}} "neck".<ref name="job">Template:Cite book</ref> The English "wryneck" refers to the habit of birds in this genus of twisting and writhing their necks when agitated. It was first recorded in 1585.<ref name="oed">Template:OED</ref> The red-throated wryneck was first identified by German ornithologist Johann Georg Wagler in 1830.<ref name="wagler">Template:Cite book</ref><ref name="gorman35">Gorman (2022) pp. 35–36.</ref> It is also known as the rufous-necked wryneck or red-breasted wryneck.<ref name="woodies38">Gorman (2014) pp. 38–39.</ref>

The two wrynecks form a superspecies that probably separated early in their evolution from the piculets,<ref name="gorman3" /> although there has subsequently been only limited divergence between the Jynx species.<ref name="gorman39">Gorman (2022) pp. 39–40.</ref><ref name="Tarboton">Template:Cite journal</ref>

Fossil record

The woodpecker family appears to have diverged from other Piciformes about fifty million years ago,<ref name="gorman3" /> and a 2017 study considered that the split between Jynx and other woodpeckers occurred about 22.5Template:Nbsmillion years ago.<ref name= shakya>Template:Cite journal</ref> A fossil dating from the early Miocene, more than twenty million years ago, consisting of the distal end of a tarsometatarsus had some ‘’Jynx’’-like features, but was classed as an early piculet.<ref>Template:Cite journal</ref> By the Pliocene (five million years ago) woodpeckers were similar to those now extant. Fossil wrynecks are known from Europe in the Pleistocene, between 2.6Template:Nbsmillion and 11,700 years ago.<ref name="gorman3" />

Species

The two species in Jynx are restricted to the Palearctic biogeographic realm and Africa. The Eurasian wryneck breeds across temperate Europe and Asia, and one of only two Old World woodpeckers to undertake long-distance migration mainly wintering in sub-Saharan Africa and tropical Asia.<ref name="gorman104">Gorman (2022) pp. 104–106.</ref> The rufous-necked wryneck has a disjunct distribution confined to sub-Saharan Africa.<ref name="gorman39" /> It is resident, although there may be local movements and post-breeding dispersal.<ref name="gorman42">Gorman (2022) p. 42.</ref> Both wrynecks have several geographical subspecies.<ref name="gorman35"/><ref name="gorman4">Gorman (2022) pp. 4–6.</ref>

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Cited texts

• Template:Cite book
• Template:Cite book

External links

• Ageing and sexing of Eurasian wryneck (PDF; 4.6 MB) by Javier Blasco-Zumeta & Gerd-Michael Heinze
• Fernández Fernández, Álvaro (2015), «La ἴυγξ mediadora: ornitología, magia amorosa, mitología y teología caldaico-neoplatónica», Cuadernos de Filología Clásica. Estudios griegos e indoeuropeos, 25: p. 223-271.