Ornithology

The amazing aerial acrobatics of swifts

It happens usually in the second week of May, between about the 8th and 12th (this year it was earlier, the 2nd): a distant sound, building as it approaches, and then the doppler dip as the first of the returning swifts screeches past the roof of our Cornish farmhouse. It’s the opening bracket of the summer months, one that closes with their departure just 12 weeks later. But it is a reminder, too, that while we might think of our house as home to two adult humans, two teenagers and a dog, it is also the habitat for several nesting swifts, swallows, house sparrows, pipistrelle bats, mice, occasional winter rodents

It’s a miracle this exhibition even exists: Audubon’s Birds of America reviewed

In 2014, an exhibition of watercolours by the renowned avian artist, John James Audubon, opened in New York. The reviews, from the New York Times to the Guardian, were unambiguously enthusiastic, celebrating the painter as a legendary genius who ‘exceeded the limits of his era’. Fast forward eight years, and a rather different vibe hangs over the latest outing of his bird portraits, one that reflects both the limits of that era and the limits of the man. Visitors to the National Museum of Scotland’s Audubon’s Birds of America are welcomed with an acknowledgment that the artist was ‘full of contradiction and controversy’. His charge sheet is substantial. It’s not

Bird migration is no longer a mystery — but it will always seem a miracle

Bird migration was once one of those unassailable mysteries that had baffled humankind since Aristotle. A strange hypothesis, genuinely advanced in the early modern period, was that birds flew to the Moon for winter, and barely more credible was a notion, which haunted the patron saint of British naturalists Gilbert White, that swallows buried themselves in mud. A modern understanding really began in the 20th century, when ornithologists started to place numbered metal rings on birds’ legs. Scott Weidensaul is one of many researchers worldwide who have helped to map this avian story. He then captured the findings in his Pulitzer-nominated Living on the Wind (2003). Yet he was also