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Glaucous Gull

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Glaucous Gull 

polar gull (Lurs hyperboreus), a bird of the gull family, of the order of plovers. Plumage is white; spine and wings, light gray; bill, yellow; and feet, yellowish pink. Length, 64-80 cm; weight 1.4-2.1 kg.

The glaucous gull is distributed all around the pole. It nests on the rocky shores of continents and islands. It lays one clutch of two or three eggs a year. Both parents brood for 27 to 28 days. During the nonnesting seasons the gull migrates out to sea. It feeds on sea wastes, fish, carrion, and so forth. The glaucous gull causes large losses to bird nesting grounds by destroying nests.

REFERENCES

Ptitsy Sovetskogo Soiuza, vol. 3. Edited by G. P. Dement’ev and N. A. Gladkov. Moscow, 1951.


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Other highlights last week were a glaucous gull at Menai Bridge, greenshank, hobby and up to 17 black-tailed godwits at RSPB Conwy and four blacktailed godwits on the River Clwyd at Rhyl.
Fecal samples from glaucous gulls (Larus hyperboreus) were enriched (18 h at 37[degrees]C) in brain-heart infusion broth (Becton Dickinson, Franklin Lakes, NJ, USA) supplemented with aztreonam and vancomycin (10 mg/L and 4 mg/L, respectively; ICN Biomedicals Inc.
This may indicate that the glaucous gull is susceptible to changes to TH homeostasis mediated by exposure to halogenated organic contaminants.
 
 
 
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