Merlin (bird) this phenomenon is due to the fluctuations of supplementary food stocks discussed above. Merlin (bird) The merlin ("Falco columbarius") is a small species of falcon from the Northern Hemisphere, with numerous subspecies throughout North America and Eurasia. A bird of prey once known colloquially as a pigeon hawk in North America, the merlin breeds in the northern Holarctic; some migrate to subtropical and northern tropical regions in winter. Males typically have wingspans of , with females being slightly larger. They are swift fliers and skilled hunters who specialize in preying on small birds in the size range of sparrows to
Mountain imperial pigeon Mountain imperial pigeon The mountain imperial pigeon ("Ducula badia"), also known as the maroon-backed imperial pigeon or Hodgson's imperial pigeon, is a species of bird in the pigeon and dove family with a wide range in south-eastern Asia. The mountain imperial pigeon is the largest pigeon species in its range at long. It has a fairly long tail, broad, rounded wings and slow wing-beats. The head, neck and underparts are vinous-grey with a contrasting white throat and brownish-maroon upperparts and wings, though the upper part of the body can be duller. The underwing is slate-grey and the tail is blackish