From reviewing the evidence, the bird was most probably the émerillon, with the pieds jaunes being either migrant falcons (the only species that might occur in the area, the Sooty Falcon, Eleonora's Falcon and the Peregrine Falcon, are larger than F. duboisi was, if not in overall length, then at least in wingspan) or the juveniles of the marsh harrier, which are distinctly colored and also have yellow feet.
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