West Midland Bird Club

'Glaucous and Iceland Gulls in the west Midlands'

This article, by a then-prominent member of the Club, first appeared in ‘British Birds’ volume 69:5 (page 179), in May 1976. 

Bird and place names were spelt as shown. For their current status, please see our county lists.

Glaucous and Iceland Gulls in the west midlands The increasing tendency of the commoner species of gull to winter inland has been well documented (see, for example, Bird Study, 1: 129–148; 14: 104–113). Most publications, however, still describe the Glaucous Gull Larus hyperboreus and the Iceland Gull L. glaucoides as exceptional inland, except in the London area. Recent experience in the west midlands, particularly at the larger Staffordshire reservoirs, indicates that both these species are in fact regular visitors to large inland gull roosts. Up to and including the winter of 1974/75, 65 Glaucous Gulls and 50 Iceland were recorded in the old counties of Warwickshire, Worcestershire and Staffordshire (including the now separate county of West Midlands), 83% of them since 1968/69. During the course of a single winter as many as eleven Glaucous and eight Iceland Gulls have been identified, and on 11th February 1973 no fewer than three Iceland Gulls were recorded together at Blithfield Reservoir, Staffordshire.

Table 1. Records of Glaucous Gulls Larus hyperboreus and Iceland Gulls L. glaucoides in the old counties of Warwickshire, Worcestershire and Staffordshire
Figures for the winter of 1974/75 are provisional
pre-1966 66/67 67/68 68/69 69/70 70/71 71/72 72/73 73/74 74/75 totals
Glaucous Gull adult 100041433319
immature 912556744346
Totals 10125971177665
Iceland Gull adult 000023454523
immature 601154432127
Totals 601177886650

All the known records in the three counties are summarised in table 1, adult and immature birds being shown separately. The totals should be regarded as minima, since allowance has been made for the possibility of a single individual making several appearances at the same or neighbouring roosts during the course of a winter. The monthly distribution of records is given in table 2.

Table 2. Monthly distribution of the records summarised in table 1 above
  Oct Nov Dec Jan Feb Mar Apr May
Glaucous Gull 231410181530
Iceland Gull 01 12121521

It is evident from these figures that since the late 1960's both species have been of regular occurrence, Glaucous generally appearing between December and March and Iceland between late December and March. The total number of birds is not large but, nonetheless, compares favourably with many coastal areas of similar latitude.

An interesting feature of the records is the high percentage of adults involved, particularly in the case of the Iceland Gull. Taking all records into account, 29% of Glaucous and 46% of Iceland were adults; considering only those occurrences since 1969/70 (77% of all records), these figures become 38% and 52% respectively. According to the literature, adult birds of both species are relatively sedentary and rarely move very far south. The increasing proportion of adults in the west midlands may therefore presage a change in the wintering habits of these two species and it will be interesting to see if this trend is maintained.

A. R. Dean and Brian R. Dean
[postal address removed]

Reproduced by kind permission of British Birds *.
Thanks to Dr. Malcolm Ogilvie for scanning the original, from his collection.

© West Midland Bird Club, 147 World's End Lane, Birmingham, England B32 1JX
Registered charity, number 213311

Ornithology in Staffordshire, Warwickshire, Worcestershire & the West Midlands county, since 1929.

Fetched from http://www.westmidlandbirdclub.com/bibliography/british-birds/69-179.htm on Thursday 24 April 2014 07:47:52

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