. Guide to the gallery of birds in the Department of Zoology of the British Museum (Natural History) . Great Auic {P/dii/us im/ciiins) with 1m;g. No. 406. 4^ PLATE VII. ^. Hkkkino CluLLS {!///s ni-ocii/,!//!.^). Nesting Scrlus, No. 124.(/, fciiinlc; /, male. • 17 Tliou^h iiiost ot the spCLies arc truly inariuc, they often waiulef fariiiiantl. aiul many breed in hirge colonies in the proximity of freshwater. Family 1. Steucorariid.!;. Skuas. Oil the floor of this Case ivill be fmind the Skuas or Parasitic Gulls; [•mostly Ijirds of a dusky or reddish-brown colour^ and remarkable noton


. Guide to the gallery of birds in the Department of Zoology of the British Museum (Natural History) . Great Auic {P/dii/us im/ciiins) with 1m;g. No. 406. 4^ PLATE VII. ^. Hkkkino CluLLS {!///s ni-ocii/,!//!.^). Nesting Scrlus, No. 124.(/, fciiinlc; /, male. • 17 Tliou^h iiiost ot the spCLies arc truly inariuc, they often waiulef fariiiiantl. aiul many breed in hirge colonies in the proximity of freshwater. Family 1. Steucorariid.!;. Skuas. Oil the floor of this Case ivill be fmind the Skuas or Parasitic Gulls; [•mostly Ijirds of a dusky or reddish-brown colour^ and remarkable notonly in jiosscssing a cere or bare wax-like base to tlie bill, but also asrej;ards their habits. Though apparently well adapted both for swim-ming and diving, they rather avoid the water, and obtain their food bydestroying other birds or by robbing tliem of their prey. Four species of the Great Skuas {Megalestris) are known, of whichone, the Bonxie {M. catarrhactes) (409), from the North Atlantic,breeds in the Shetland Islands. One of the Southern forms [M. ant-iircfica) (410), ranging from New Zealand to tlie Falkland Islands,appears to feed almost entirely on P


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