ML485183011
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观察细节
A pair in building a nest in a Phragmites reedbed near Topar. One bird, believed to be the male, was particularly distinctive, displaying a uniform rich chocolate-brown colour to the entire fore-crown, crown, nape and mantle, while the mask was only slightly darker and barely contrasted with the crown. The chin and throat were white and sharply demarcated from the ear-coverts. In contrast, the presumed female more closely resembled a European bird, with a black mask contrasting with a whitish crown and nape, although some dark brown flecking was visible on the fore-crown. Both birds showed broad whitish fringes to the tertials and secondaries, creating a whitish panel in the closed wing. Breeding birds in SE Kazakhstan (L Balkhash, L Sasykkol, L Alakol and L Zaysan) should be Black-headed Penduline Tits R. macronyx ssaposhnikowi which probably originated as hybrid between nominate race of macronyx and race jaxarticus of R. pendulinus, although neither parent found within current range of ssaposhnikowi; this race is very variable, some being dark-hooded like nominate, others having chestnut crown and nape and resemble R. pendulinus caspius (see https://doi.org/10.2173/bow.bhptit1.01)
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