Guest feature | Unveiling the secrets of the breeding season in Broad-winged Hawks: home range size and site fidelity
When studying avian breeding ecology, the first questions that come to our minds are: where does the bird breed? How much space does it need? Does it change annually? Indeed, understanding home range size, and identifying the habitat features influencing it, is key to addressing potential conservation issues. Read More
OC bimonthly news brief Nov-Dec 2023
The Ornithological Council is pleased to provide this bimonthly report covering activities in November and December 2023. The Ornithological Council’s mission is to: Our work focuses on animal welfare issues, permits, research funding, and other policies that affect ornithologists and ornithological societies. We greatly appreciate your support. Please contact Laura Bies with questions or concerns […] Read More
Guest feature | Northern Bobwhite (Colinus virginianus) breeding season roost site selection in a working agricultural landscape in Clay County, Mississippi
Northern bobwhite (Colinus virginianus) have been considered a beloved gamebird of the North American hunter for generations. Unfortunately, bobwhite populations are experiencing range-wide population declines. By the early 1990s, bobwhite populations declined by 60-80% throughout approximately 70% of their range. Read More
AFO news | Statement on common name changes
The Association of Field Ornithologists (AFO) strongly endorses efforts to increase diversity, equity, and inclusion in the field of ornithology and the pastime of birding. The recent decision by the American Ornithological Society to change all eponymous bird names caused a stir in much of the ornithological community. We have had many discussions among AFO […] Read More
Guest feature Studying | Bird Migration without ever capturing a single bird
The ability to attach devices such as satellite transmitters or geolocators to birds has transformed our knowledge of how birds migrate. However, these technologies have their limits. They require capturing the birds, usually twice, and the expense limits most studies to a small number of individuals within a relatively limited portion of their range. Also, some species, such as the Ruby-crowned Kinglet, are too small to allow tagging with current geolocators. Read More
Guest feature | Long-term changes in arrival timing and site functionality in two passerine species during spring migration in northeastern Pennsylvania, USA
We have been studying migratory songbirds for more than 18 years in and near Lackawanna State Park in Lackawanna County Pennsylvania, USA. Over the years we have examined a number of questions, mostly focused migration. In addition to capturing and banding birds for identification, we take assorted morphological measures, weigh, age (via plumage and measurements), and sex […] Read More
Guest feature | The influence of artificial light on the behaviour of a nocturnal bird
Light pollution caused by artificial light at night (or ALAN) is one of many factors of the ever-increasing urbanization of the planet that impact the behaviour and ecology of organisms. The use of artificial light in rural and natural areas in addition to dense urban centres mean its one of the more pervasive symptoms of urbanization and can alter natural environments even quite far from cities. However, the ecological consequences of ALAN on the behaviour of organisms is not well understood, […] Read More
Guest feature | Sex determination of Eastern White-crowned Sparrows (Zonotrichia leucophrys leucophrys) using wing chord length
The White-crowned Sparrow (Zonotrichia leucophrys) is a common, sexually monochromatic (male and female coloration is identical) songbird species that occurs across North America in different seasons. For this reason, it is one of the most commonly studied songbirds in North America. The White-crowned Sparrow has four currently recognized subspecies: Eastern (leucophrys), Gambel’s (gambelii), Nuttall’s (nuttalli) […] Read More
