Monthly marathon
01 March 1990
Main paper
n p h e gull (Brit. Birds 82: plate 370) was named Great Black-headed Gull Lams ichthyaetus (35%) C o m m o n Gull L. canus (33%) Mediterranean Gull L. melanocephalus (18%) Ring-billed Gull L. delawarensis (13%) I For the first time in this fourth 'Marath...
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