Assertion: robin's plumage | /r/CapableOf | breed plumage
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Source sentences:
text: Plumage is regularly moulted; the standard plumage of a bird that has moulted after breeding is known as the " non-breeding " plumage, or—in the Humphrey–Parkes terminology—"basic" plumage; breeding plumages or variations of the basic plumage are known under the Humphrey–Parkes system as " alternate " plumages.