RSPB’s 2021 Big Garden Birdwatch finds sparrow still most common species, while starlings, greenfinch and chaffinch struggle
The house sparrow remains the most frequently spotted garden bird, but 16 of the top 20 species have declined in number since last year, according to the RSPB’s Big Garden Birdwatch.
More than a million people took part in this year’s national bird survey on the last weekend in January – double the figure for the previous year.
