birdsnews.com
Category archives for: North America

Bald Eagle trick: turn Pacific Ocean ‘bait ball’ into fast-food treat

Bald Eagle. by David Ellis

The two ornithologists had just visited a Peregrine Falcon (Falco peregrinus) eyrie and were motoring their way to another one. As their inflatable boat rose and fell in heavy swells along the northern Queen Charlotte Islands off Canada’s western coast they saw a flock of whirling Bald Eagles (Haliaeetus leucocephalus). By Rex Graham David H. [...]

State-of-the-birds in San Francisco Bay: fairly good – until sea level rises

Avocets flying over the bay. Photo: Ingrid Taylar

    A multi-agency report on the state of birds in the San Francisco Bay area paints a mixed picture, with most bird species doing well after decades of investments in habitat restoration, but many are vulnerable to rising sea levels, extreme-weather events, non-native predators and other threats. The analysis was based on years of [...]

Two Louisiana teen-agers suspects in killing of Whooping Cranes in reintroduction area

Whooping Crane

By Rex Graham Two whooping cranes — the most endangered of all of the world’s crane species — have been shot and killed near the Jennings, Louisiana, according to the he Louisiana Department of Wildlife and Fisheries (LDWF). Agents have identified two juveniles for their alleged role in the illegal shooting of the cranes, which [...]

Successful interbreeding of two Vireo species in California leads to keen interest in the hatchlings

Interspecific Vireo mating

A male Least Bell’s Vireo (Vireo bellii pusillus) in May 2010 wove a nest in the branch of an arroyo willow along the San Luis Rey River in Oceanside, California. But he didn’t build it for a female of his own species. By Rex Graham His mate was a female White-eyed Vireo (V. griseus). The [...]

San Francisco commission approves bird-safe buildings standards

Bird Kill from building collisions

By Rex Graham BirdsNews.com The San Francisco Planning Commission by a 5-1 vote on July 14 approved new Bird Safe Building Standards. The San Francisco Board of Supervisors is expected to consider at its August or September meeting the new standards, which were supported by the American Bird Conservancy and Golden Gate Audubon. “Bird deaths [...]

Oil sands boom a bust for whooping cranes

Whooping cranes

The not-for-profit research organization Global Forest Watch Canada (GFWC) says whooping cranes regularly fly over and land within Alberta’s oil sands region and are increasingly threatened by development of the fossil fuel. The area in northeastern Alberta includes a surface-mineable area containing facilities, mine pits and toxic tailings ponds. Scientists estimate the avian mortality at [...]

For mist-netted birds – what is ‘acceptable’ injury rate?

Erica Spotswood

Humans and birds are united thousands of times a day worldwide in an ornithological ritual. Researchers catch birds in mist nets, place metal or plastic bands around their legs or wings, make a few measurements and let them go. Since mist-netting became the preferred method to capture wild birds for banding studies in the 1950s, [...]

Santa Cruz teen on ornithological mission

Alex Rinkert  (John Williams/Santa Cruz Sentinel)

Alex Rinkert gets up around dawn three days a week and heads to his chosen survey spots among Santa Cruz Sandhills in northern California, taking a scientific tally of birds there. He says the sandhills comprise about 4,000 acres scattered throughout the valley. After a short hike, the 18-year-old waits, standing very still, for five [...]

300x250 ad code [Inner pages]

Search Archive

Search by Date
Search by Category
Search with Google
120x600 ad code [Inner pages]
Log in | Designed by Gabfire themes