Friday , July 30 2021

You singing pay a price for winter twists?



In the years when winter conditions are particularly hard, birds that depend on food condiments are sometimes forced to leave their homes in northern forests and roam far from their usual craving to find enough to find. food. A new study published in De Auk: Ornithological Advances Use of Citizen Science data for the first time to see these winter movements called "abusers" lead to a decline in & quot; population density & quot; in & # 39; e broadly the following summer, where & # 39; t suggests that destroyed birds are successful at & # 39; and search for food in unknown landscapes.

Many birdwatchers love, because they can temporarily bring in rare rare boreal birds south in large numbers. However, we do not know much about how these journeys in unknown territory actually affect bird watching. Red-breasted Nuthatches are a useful type in which they study this, after returning to the same winter using the same nuclear power, making it impossible to trace how & # 39; t their populations are & # 39; e habitation of & # 39; one after the next.

In Canada's area, Erica Dunn has audited over fifty years of Ontario's Long Point Bird Observatory (LPBO) bills for citizen science of FeederWatch project, the Christmas animal section, and eBird to confirm falling failures at Long Point are a good indicator of what goes on with Nuthat about North America in every given year. After that, she used the use of bird sciences to see how Sims' uses were followed by large abusers and found that population density was tending to a winter where nuthatches were more widespread than usual.

This is the first study to learn a correlation between the magnitude of free winter time and population density in & # 39; a next breeding season. While these large silver winter changes are a necessity for birds in the years when food is reduced, the rigors of travel, exposure to predators, and the need to find food in unknown places an interpreter can.

"This paper has the role of 30 years ago, when I ran the LPBO's Ontario Bird Feeder Survey, and noticed that feeder watchers are noticing more nuthatches in & # 39; a winter after major magnification & # 39, a Long Point, prevented the biggest offense in the LPBO in 2012, I was inspired to use fifty-plus years of data to investigate this old judgment in more detail, "says Dunn . "It was a great project without a specific purpose or hypothesis – I just had a great dataset and wanted to see what I could learn. Sources of scientific science are great for this kind of exploration, for freeing the datasets available to anyone who wants to work with them. "

###

"Dynamics and popular consequences of disorder in Red-breasted Nuthatch (Sit canadensis) "will be available April 15, 2019, at https: //academic.oup.com /plus /article-lookup /doi /10.1093 /plus /ukz008.

About the magazine: De Auk: Ornithological Advances is a peer-reviewed, international journal of ornithology, published by the American Ornithological Society. De Auk Beginning publication in 1884 and in 2009 was honored as one of the 100 most influential biology and medicine journals in & # 39; a last 100 years.

Disclaimer: AAAS and EurekAlert! are not responsible for the quality of news that is posted in EurekAlert! through contribution settings or for the use of all information via the EurekAlert system.


Source link