Many species of birds are nesting and laying eggs nearly a month earlier than they did 100 years ago in the Chicago area and researchers believe climate change is behind it.
Those were among the findings in a new study published in the Journal of Animal Ecology. Researchers compared recent observations with century-old eggs preserved in museum collections.Credit: E. Jason Wambsgans /Chicago Tribune via APResearchers compared recent observations with century-old eggs preserved in museum collections.
dating from the 1870s to the 1920s. The collection includes information about the eggs. The Field's collection, like most, drops off after the 1920s, when egg-collecting went out of fashion for hobbyists and scientists.climate change"Insect numbers have been shown to be declining, too, although again, it's hard to have good data on what each species of insect is doing," he said.
Cedar waxwing eggs collected in 1897 in the Field Museum's Bird Division egg collection are displayed on Wednesday, March 23, 2022 in Chicago. Those were among the findings in a new study published in the Journal of Animal Ecology. Researchers compared recent observations with century-old eggs preserved in museum collections. Credit: E. Jason Wambsgans /Chicago Tribune via AP
Besides serving as a warning about climate change, the study highlights the importance of museums' egg collections, which are often underutilized.
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