Radjah Shelduck
Radjah radjah
Both the male and female of the species are mostly white, with dark wing-tips and a distinctive "collar" of dark feathers. When viewed from above, during flight or with wings outstretched, green bands are visible on the tops of their wings. To communicate, the female utters a harsh rattle while the male emits a breathy, "sore-throat" whistle.
ID text from Wikipedia, CC BY-SA 4.0
Rosy-billed Pochard
Netta peposaca
Like many other members of family Anatidae, the rosy-billed pochard exhibits significant sexual dimorphism. Males have a purplish-black head, neck and breast with gray sides, a white area on the crissum (the area around the cloaca), and a bright red bill and red eyes. The bill has a large rounded knob, which is bright red, and rest of the bill gradually fades towards a pale pink before ending with a black tip. The rounded knob of the bill increases in size and intensity in colour during the mating season. Voice: Similar to almost all other bird species, rosybills have different calls used for different purposes. The characteristic 'honk' of family Anatidae is obvious in this pochard's vocalization, however it is much deeper as compared to a mallard, for example. Based on limited recordings of vocalizations, it appears as if the vocalization of the rosey-billed pochard is relatively quiet.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Radjah Shelduck and Rosy-billed Pochard.