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Concept
Saker falcon
Summary
The saker falcon (Falco cherrug) is a large species of falcon. This species breeds from central Europe eastwards across the Palearctic to Manchuria. It is mainly migratory except in the southernmost parts of its range, wintering in Ethiopia, the Arabian peninsula, northern Pakistan and western China. The saker falcon is the second fastest bird in level flight after the white-throated needletail swift, capable of reaching 150 km/h
(93 mph). It is also the 3rd fastest animal in the world overall after the peregrine falcon and the golden eagle, with all three species capable of executing high speed dives known as “swooping”, in excess of 320 km/h (200 mph). The saker falcon is the national bird of Hungary, the United Arab Emirates, and Mongolia.
This species belongs to the close-knit hierofalcon complex. In this group, there is ample evidence for rampant hybridization and incomplete lineage sorting which confounds analyses of DNA sequence data to a massive extent; molecular studies with small sample sizes can simply not be expected to yield reliable conclusions in the entire hierofalcon group. The radiation of the entire living diversity of hierofalcons seems to have taken place in the Eemian interglacial at the start of the Late Pleistocene, a mere 130,000–115,000 years ago; the saker falcon represents a lineage that expanded out of northeastern Africa into the interior of southeastern Europe and Asia, by way of the eastern Mediterranean region.
In captivity, lanners and sakers can interbreed, and gyrfalcon-saker hybrids are also available (see bird flu experiment described in "Ecology and status").
The specific name, cherrug, comes from the Sindhi name charg for a female saker. The common name saker comes from the (صقر) meaning "falcon".
Saker falcons at the northeast edge of the range in the Altai Mountains are slightly larger, and darker and more heavily spotted on the underparts than other populations. These, known as the Altai falcon, have been treated in the past either as a distinct species "Falco altaicus" or as a hybrid between saker falcon and gyrfalcon, but modern opinion (e.
Official source
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