The mottled duck or mottled mallard is a medium-sized dabbling duck. There are two distinct populations of mottled ducks. One population, A. fulvigula maculosa (mottled duck), lives on the Gulf of Mexicocoast between Alabama and Tamaulipas (Mexico); outside the breeding season individual birds may venture as far south as to Veracruz. The other, A. fulvigula fulvigula (Florida duck), is resident in central and south Florida and occasionally strays north to Georgia.
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern (IUCN, 2012).
Above: adult Mottled ducks, male in front
Above: adult male Mottled duck, summer plumage
Above: adult female Mottled duck, summer plumage
Above: Mallard-types from America. Click to enlarge.