HomeBirdThe Siberian Rubythroat – 10,000 Birds

The Siberian Rubythroat – 10,000 Birds

The Siberian Rubythroat passes via Shanghai on its autumn migration, primarily in October and November. Its Latin title, Calliope calliope, is derived from Calliope, the chief of the Greek muses. Apparently, she was each the wisest and probably the most assertive of the muses. She additionally should have had one thing of a imply streak – after defeating the daughters of the king of Thessaly in a singing contest, she punished them by turning them into magpies.

eBird appears to be a fan of the species, calling it a perky, long-legged songbird” with a “variable melodic track consist[ing] of lovely warbling and occasional mimicry”.

Nonetheless, eBird errs stating that “youthful male could have a touch of purple, whereas feminine lacks purple” – although most birders certainly assume that is true, females typically have a reddish throat (like a carelessly utilized lipstick), as described within the fairly detailed e-book “Ageing & Sexing of Migratory East Asian Passerines”, which surprisingly solely reaches #4,310,956 within the Amazon Rating of Greatest Promoting Books, regardless of being a discount at USD 107 (cash nicely spent, should you ask me).

A couple of pictures of the feminine

Certainly, one other supply additionally states that neither dimension nor colour of the purple throat patch or the bordering sub-malar stripes are dependable area marks for sexing Siberian Rubythroats.

The Siberian Rubythroat appears to considerably lack a correct inbuilt GPS system – whereas it breeds as far west because the Ural Mountains and winters as far est as Central India, it doesn’t migrate via central Asia in giant numbers (regardless that this may be the shortest means). Quite, throughout autumn migration, it first flies to east Siberia, then turns south throughout jap China, and eventually turns west (supply: Birds of Two Worlds: The Ecology and Evolution of Migration).

It additionally appears that completely different populations of rubythroats use completely different and particular routes, a phenomenon that’s apparently known as “migratory connectivity” and that’s comparatively unusual amongst long-distance migrants. Birds breeding in mainland East Russia migrate via mainland China and spend the winter in South-East Asia, whereas birds ringed in Japan and easternmost Russia have been primarily discovered wintering in Taiwan and the Philippines (supply). There’s additionally one other research additionally wanting on the migration routes of Siberian Rubythroats primarily based on light-level-based geolocation.

Different enjoyable issues that researchers have finished with Siberian Rubythroats embrace investigating their response to mild of various wavelengths. They discovered that the seen mild sensitivity of Siberian Rubythroat was the best for the 478 nm turquoise and decreased in direction of the 622 nm purple, although I’m not fairly certain if that is notably related info.

Equally, I’m not fairly certain what to make of the knowledge that the wing size of rubythroats trapped in Hong Kong grew to become shorter between 1985 and 2020 (supply) – my guess is that both world warming or Donald Trump ought to be accountable.

The track of the Siberian Rubythroat is fairly fascinating and infrequently sounds nearly jazzy to me (not often a praise coming from me, however on this context, it’s). A paper on this additionally describes the track of the species as extraordinarily complicated and variable. The paper provides much more element on its track: “This species sings predominantly discontinuously, however the length of particular person songs varies considerably. Every particular person track consists of quite a few track items, a stereotypical set of various notes and syllables which are all the time introduced collectively and in a strictly mounted order.”

The foraging conduct of the rubythroat is described as a “complicated exploration of dense vegetation thickets” (supply), notably in comparison with a few of its closest family members such because the Rufous-tailed Robin, the Siberian Blue Robin, and the Bluethroat.

Whereas birders usually are very joyful to see Siberian Rubythroats, there is also the chance of them spreading ailments. A research discovered that Siberian Rubythroats breeding in Siberia and Russia and wintering in Southeast Asia carry each tick-borne encephalitis virus and a few borrelia species. So higher not let a rubythroat chew you.  

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