It's Mono Monday and the Theme is Layers.
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These are Spotted Whistling Ducks (Dendrocygna guttata); This duck can be found in Indonesia, New Guinea, Australia and the Philippines.  This pair lives at the zoo in Milwaukee.
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Non-threatened.  Its diet consists of grass seeds, aquatic invertebrates and plants as well as small fish.
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Might not be exactly the type of "layers" you had in mind....but there's no doubt that they are "true layers" along with all other birds, platypus and echidna.
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Best in Large.