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Posts Tagged ‘migration’

Starling Flash Mob

Posted in Uncategorized, tagged , , , , , , , , , , , , , , , , , on November 7, 2014| 2 Comments »

Photo: PA/Owen Humphries
Murmuration of starlings over Gretna, Scotland

Starlings swarm in flash mobs over Scotland every November and February, and they don’t even need social media to remind them it’s time.

According to an article at the BBC, “Tens of thousands of the birds are regularly seen around this time of year near the Dumfries and Galloway town. It is one of the most famous locations for the natural spectacle, the reason for which is not definitively known.

“A survey of the birds across the UK is currently under way with members of the public urged to record sightings. The poll, conducted by the University of Gloucestershire and the Society of Biology, is the first of its kind and has already received more than 600 reports from Cornwall to John O’Groats.

“Dr Anne Goodenough, reader in applied ecology at Gloucestershire University, said: ‘One of the theories behind the murmurations is that it means they are safer from predators such as hawks and falcons.

” ‘Another theory could be they are signalling a large roost and it could be a way of attracting other birds to that area to build up a big flock as it would be warmer. It’s much warmer to roost as a big group rather than a smaller one and the murmurations can be as big as 100,000 birds.’ ”

More here. Don’t miss the other amazing photos at the BBC site.

YouTube video: DylanWinter@virgin.net

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Birds Deal with Hurricanes

Posted in Uncategorized, tagged , , , , , , , , , , , , , , on November 16, 2012| Leave a Comment »

Photograph of northern lapwing off course in Massachusetts: Ian Davies

Birds deal with hurricanes better than you might think.

Some get blown off course, but they adapt. Today’s Boston Globe has a story by Peter Schworm and Melissa M. Werthmann on northern lapwings that Hurricane Sandy detoured from their Scandinavia-to-African migration route. The lapwings are now delighting birdwatchers on Cape Cod, Nantucket, and in Middleborough. Read more here.

And Natalie Angier writes at the NY Times, “Biologists studying the hurricane’s aftermath say there is remarkably little evidence that birds … have suffered the sort of mass casualties seen in environmental disasters like the BP oil spill of 2010, when thousands of oil-slicked seabirds washed ashore, unable to fly, feed or stay warm.

“ ‘With an oil spill, the mortality is way more direct and evident,’ said Andrew Farnsworth, a scientist at the Cornell Lab of Ornithology. …

“To the contrary, scientists said, powerful new satellite tracking studies of birds on the wing — including one that coincided with the height of Hurricane Sandy’s fury — reveal birds as the supreme masters of extreme weather management, able to skirt deftly around gale-force winds, correct course after being blown horribly astray, or even use a hurricane as a kind of slingshot to propel themselves forward at hyperspeed. …

“In preparation for a possible offshore wind development project, Caleb Spiegel, a wildlife biologist with the United States Fish and Wildlife Service, and his colleagues at the Bureau of Ocean Energy Management have attached transmitters to the tail feathers of several types of migratory birds, including the northern gannet, a big waterfowl with a spectacular fishing style of falling straight down from the sky like a missile dropped from a plane.

“As it happened, one of the gannets was approaching the southern shore of New Jersey at just the moment Hurricane Sandy made landfall there, and Mr. Spiegel could catch the bird’s honker of a reaction. Making a sharp U-turn, it headed back north toward Long Island and then cut out to sea along the continental shelf, where it waited out the storm while refueling with a few divebombs for fish.

“ ‘The bird has since returned to New Jersey,’ Mr. Spiegel said. ‘It’s pretty much back where it started.’ ” More here.

Photograph: NY Times
A protected area for plovers in Lido Beach, N.Y., after a 2009 storm.

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