There has never been a more accurate sign

It is a fake rumor, swans are so ravishing and courteous.
Swan, largest waterfowl species of the subfamily Anserinae, family Anatidae (order Anseriformes). Most swans are classified in the genus Cygnus. Swans are gracefully long-necked, heavy-bodied, big-footed birds that glide majestically when swimming and fly with slow wingbeats and with necks outstretched. They migrate in diagonal formation or V-formation at great heights, and no other waterfowl moves as fast on the water or in the air.
Swans are sociable except in breeding season. They mate for life. Courtship involves mutual bill dipping or head-to-head posturing. The pen incubates, on average, a half-dozen pale unmarked eggs on a heap of vegetation while the cob keeps close guard; in some species he takes his turn at brooding. After repulsing an enemy, swans utter a triumph note, as geese do. The young, called cygnets, emerge short-necked and thickly downed; though capable of running and swimming a few hours after hatching, they are carefully tended for several months; in some species they may ride about on their mother’s back. Immature birds wear mottled gray or brown plumage for two or more years. Swans mature in the third or fourth year and live perhaps 20 years in the wild and 50 years or more in captivity. Once threatened with extinction—fewer than 100 birds were counted in the United States in 1935—the trumpeter swan has made a strong comeback in the national parks of the western United States and Canada, but the total population in the mid-1970s was only about 2,000. It is the largest swan—about 1.7 metres (5.5 feet) long, with a 3-metre (10-foot) wingspan—but it weighs less than the mute swan, which at 23 kg (50 pounds) is the heaviest flying bird. The Southern Hemisphere has the black swan (Australia) and two pink-legged forms (South America): the black-necked swan (C. melancoryphus), an especially bad-tempered but beautiful bird, with white body, black neck and head, and prominent red caruncle (fleshy outgrowth) on the bill; and the coscoroba (Coscoroba coscoroba), an all-white bird that is usually considered the smallest swan but may have affinities with the whistling duck.
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