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Photos: Peter Taylor. The top photo shows Trumpeter Swans on April 11th 2010 near Pinawa while the bottom photo shows Trumpeter Swans in the same location on the same day in 2009 - what a comparison! Peter writes " I guess they're just an X for now, though there was a bit of head-dipping, presumably low-key courtship between two of the birds".
Watch, keep notes and record.
The role of the Observers at the Royal Greenwich Observatory was only for the most dedicated. Often fraught with difficulties, particularly the unpredictable weather. Light pollution became such an issue that the whole operation moved to Herstmonceux in East Sussex. The new location served well but technology and practicalities played a hand forcing a geographically drier climate and higher altitude to be found.