February 20, 2014
July 9, 2013
Conspiracy of Ravens Boardgame
Objectives of the Game
Ravens are very smart and clever birds. They are very sociable creatures and work together
The Conspiracy of Ravens Game Information
Rules of the Game
About the game
A group of ravens is sometimes referred to as a “conspiracy of ravens”. Although ravens are considered highly intelligent, they only “conspire” to find food or perhaps to play tricks on other animals. The Common or Northern Raven (Corvus corax) is a large black bird, approximately 56-69 cm long. Ravens look like crows (large black birds) but the body length, the shape of the tail, and their beaks, are different. Ravens consume a variety of fruits, berries, grains, carrion (meat), amphibians and invertebrates. They are also
–Sherrene D. Kevan
Price: $1.25 CDN
After the payment is received via PayPal or Credit Card, you will be sent an email with the link to download the game. All files within the downloaded .zip file need to be extracted and printed on a colour printer. Instruction for play included.
|New Study Finds Pesticides Leading Cause of Grassland Bird Declines|
Contact: Robert Johns, 202-234-7181 ext.210, Email click here
(Washington, D.C., February 25, 2013) A new study led by a preeminent Canadian toxicologist identifies acutely toxic pesticides as the most likely leading cause of the widespread decline in grassland bird numbers in the United States, a finding that challenges the widely-held assumption that loss of habitat is the primary cause of those population declines.
The scientific assessment, which looked at data over a 23-year period – from 1980 to 2003 – was published on February 20, 2013 in PLOS One, an online peer-reviewed scientific journal. The study was conducted by Dr. Pierre Mineau, recently retired from Environment Canada, and Mélanie Whiteside of Health Canada.
The study looked at five potential causes of grassland bird declines besides lethal pesticide risk: change in cropped pasture such as hay or alfalfa production, farming intensity or the proportion of agricultural land that is actively cropped, herbicide use, overall insecticide use, and change in permanent pasture and rangeland.
“What this study suggests is that we need to start paying a lot more attention to the use of pesticides if we want to reverse, halt or simply slow the very significant downward trend in grassland bird populations. Our study put the spotlight on acutely toxic insecticides used in our cropland starting after the Second World War and persisting to this day – albeit at a lower level. The data suggest that loss of birds in agricultural fields is more than an unfortunate consequence of pest control; it may drive bird populations to local extinction,” Mineau said.Many grassland bird species have undergone range contractions or population declines in recent decades. In fact, analyses of North American birds indicate that these birds are declining faster than birds from other biomes.Habitat protection has long been considered a central pillar in efforts to stem the decline of grassland bird species, such as the Vesper Sparrow, the Ring-necked Pheasant, and the Horned Lark.“We are still concerned about loss of habitat in agriculture, range management, and urban development,” said Cynthia Palmer, manager of the Pesticides Program at American Bird Conservancy, a leading U.S. bird conservation organization. “This study by no means diminishes the importance of habitat fragmentation and degradation. But it suggests that we also need to rein in the use of lethal pesticides in agriculture, and that we need to be especially careful about any new pesticides we introduce into these ecosystems such as the neonicotinoid insecticides. It reminds us that the poisonings of birds and other wildlife chronicled a half century ago by famed biologist and author Rachel Carson are by no means a thing of the past.”
The researchers focused on the extent to which lethal pesticides, such as organophosphate and carbamate insecticides, are responsible for the decline in grassland bird populations. The study found that lethal pesticides were nearly four times more likely to be associated with population declines than the next most likely contributor, changes in cropped pasture – an important component of habitat loss associated with agricultural lands.The publication says that “…..large quantities of products of very high toxicity to birds have been used for decades despite evidence that poisonings were frequent even when products were applied according to label directions.”
#American Bird Conservancy (ABC) is a 501(c)(3) not-for-profit membership organization whose mission is to conserve native birds and their habitats throughout the Americas. ABC acts by safeguarding the rarest species, conserving and restoring habitats, and reducing threats, while building capacity in the bird conservation movement.
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