On 8th April 2010, PT found two Greylag Goose Anser anser nests on a ruined castle in Co. Cork. Greylags are typically ground- nesters but there are documented cases of (single) Greylag nests in trees (e.g. Redfern 2002, Coath, 2006); to our knowledge, however, this is the first documented record of Greylag Geese nesting on a building. The nests were situated on top of the south- facing, 1-m-wide


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