Regular attendees to The Wash (and everyone we encounter) may wonder why we typically devote one out of three tides of fieldwork to resighting colour-marked birds (as well as having some ‘resighting only’ weekends). Using colour marks alongside metal rings allows us to study aspects of wader ecology which cannot be investigated using metal rings alone. We now colour mark a variety of species and further information on our colour-marking schemes can be found here.
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