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Mute swan
Cygnus olor
41.6, -86.7168
Field Notes
Description:
The mute swan is one of the heaviest flying birds, with males (known as cobs) averaging about 11–12 kg (24–26 lb) and the slightly smaller females (known as pens) weighing about 8.5–9 kg (19–20 lb).
Habitat:
Urban lake
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