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Climate change .. How does it change the date of laying eggs for birds?

Amman Today

publish date 2022-03-25 09:34:10

A recent practical study revealed the negative impact of climate change on wildlife, especially birds, which environmentalists have long warned of.

According to the study published in the Journal of Animal Ecology, Friday, the arrival of early spring in most parts of North America due to climate change, prompted many birds to lay their eggs prematurely during the year.

Of the 72 bird breeds examined across Chicago, nearly a third laid eggs 25 days early, compared with 100 years ago, the researchers said.

Affected breeds of birds include the mourning pigeon, the American Kestrel and the Cooper Buzzer, according to “Reuters”.

Scientists have not yet found any clear common features between these breeds, such as size or migration status, that may explain the change in the timing of egg laying.

But John Bates, superintendent of the Ornithological Department at the Field Museum of Natural History in Chicago and leader of the research team, said that “the majority of birds we studied feed on insects, which in turn alter their seasonal behavior by climate.”

He added, “The impact of the life cycles of plants and animals on climate change and seasonal disturbances is an issue that has become more priority and important in people’s minds.”

Scientists believe that these changes may be among many reasons for the sharp decline in the number of birds since the 1970s, as a study in the journal “Science” in 2019 revealed that the United States and Canada lost nearly a third of their birds, or about 3 million birds.

The results of this study are consistent with the conclusions of similar studies conducted in the past decades in the United Kingdom, which also discovered that the laying of eggs was carried out prematurely along with the changes recorded in the growing season.

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Source : اخبار الاردن

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