Mayor of Hereford Kevin Tillett said he had heard the cuckoo calling for the first time this year in Aconbury Woods on April 20, while Nick Devereaux said he heard one last week in Olchon Valley.
The song of a cuckoo resembles its name ‘cuck-oo’ and can often be heard in woodland and grassland habitats.
Cuckoos are often mistaken for sparrowhawks as they have blue-grey backs and heads, with striped dark grey and white undersides.
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They also have long tails and pointed wings which makes them look hawk-like in flight.
The bird, a summer visitor from Africa, is most likely to be seen in the UK from March to August.
Their recent population decline made them a Red List species in the 2021 UK Conservation Status Report.
Red is the highest conservation priority, with species on this list needing urgent action.
Species on this list, such as cuckoos, are globally threatened, with big declines in breeding populations and ranges.