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Mute Swan


Mute Swan
Photo Information
Copyright: Bogdan CIUNGARA (BogdanC) Silver Note Writer [C: 0 W: 0 N: 47] (413)
Genre: Animals
Medium: Color
Date Taken: 2009-04
Categories: Birds
Camera: Nikon D40X, Nikkor 70-300mm f/4.5-5.6G IF-ED AFS VR
Photo Version: Original Version
Date Submitted: 2009-05-02 14:16
Viewed: 2939
Points: 0
[Note Guidelines] Photographer's Note
Mute Swan (Cygnus olor)
Adults of this large swan range from 125 to 170 cm (49-67 in) long with a 200-240 cm (79-95 in) wingspan. They may stand over 1.2 m (4 ft) tall on land. Males are larger than females and have a larger knob on their bill.

The Mute Swan is one of the heaviest flying birds, with males (known as cobs) averaging about 12 kg (27 lbs) and females (known as pens) more than 8 kg (19 lbs). An unusually big Polish cob weighed almost 23 kg (50 lbs), surpassing the longer-bodied Trumpeter Swan to make it the heaviest waterfowl ever recorded. Its size, orange-reddish bill and white plumage make this swan almost unmistakable at close quarters. The most similar species is the Whooper Swan, but it has a yellow and black bill, lacks the curved neck, is longer and heavier, and lacks the characteristic projection above the bill.

Young birds, called cygnets, are not the bright white of mature adults, and their bill is dull greyish-black, not orange, for the first year. The down may range from pure white to grey to buff, with grey/buff the most common. The white cygnets have a leucistic gene. All Mute Swans are white at maturity, though the feathers (particularly on the head and neck) are often stained orange-brown by iron and tannins in the water.

The morph immutabilis ("Polish Swan") has pinkish (not dark grey) legs and dull white cygnets; as with white domestic geese, it is only found in populations with a history of domestication.
From Wikipedia


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