29% of common birds disappear in North America and Canada

A study published in the journal Science reveals that the bird population in Canada and North America has been reduced by 29 percent, which translates into 2.9 billion copies.

How is climate change affecting the world’s biodiversity? It is a fact that if global warming reaches the dreaded 2 degrees Celsius it would double the risk, more than today, of losing multiple species of animals and plants.

A few weeks ago we analyzed the current situation in the Amazon and the number of active fires, especially in Brazil, with the disastrous consequences that this entails. The Amazon, shared by nine countries, produces 20% of the world’s oxygen; it houses 30,000 types of plants; 1,500 species of birds; 500 mammals; 550 reptiles; 2,500 fish, and 2.5 million insects. Much of this biodiversity has disappeared before our eyes without being able to react.

A new study carried out by experts in ornithology in the United States once again confirms the environmental disaster in which we are immersed. The study, published in the journal Science, reveals that the bird population in Canada and North America has declined by 29 percent in half a century.

2.9 billion copies of birds have disappeared

Nearly 2,900 million bird specimens have disappeared as a result of global warming, as this study in 529 species has revealed over the past 50 years. What species have been most affected? Although part of all these species have disappeared, the most affected have undoubtedly been common birds such as larks, sparrows or starlings by 75 percent.

No doubt the habitat of the species is seriously altered and, with it, the entire ecosystem. In fact, another recent study published in the Natura magazine we talked about a few weeks ago revealed that global warming is causing an increase in neurotoxyl methylmercury in fish such as bluefin tuna, swordfish and cod.

climate change

Causes: pesticides and intensive agriculture

What have been the causes of the disappearance of bird species in North America and Canada? Mainly, the deterioration of their habits as a result of the use of pesticides and intensive agriculture. This type of agriculture is unsustainable because it is causing the destruction of forests.

Although not everything is negative, because the same study points out that although the most common birds are disappearing in large quantities, those that were threatened are reappearing as raptors and aquatic birds. However, this drastic decline in birds such as sparrows is detrimental to the entire planet as they are vital to maintain our ecosystems by pollinating, propagating seeds and avoiding uncontrolled pests.

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