Tech

Many birds nest and lay eggs earlier in Chicago

Study: Many birds nest and lay eggs earlier in Chicago

John Bates, curator of the Field Museum’s Bird Division, views bird eggs Wednesday, March 23, 2022 in Chicago. Many bird species are nesting and laying eggs nearly a month earlier than they were 100 years ago in the Chicago area, and researchers believe climate change is behind it. These were among the findings of a new study published in the Journal of Animal Ecology. The researchers compared the recent observations to centuries-old eggs kept in museum collections. Source: E. Jason Wambsgans/Chicago Tribune via AP

Many bird species are nesting and laying eggs nearly a month earlier than they were 100 years ago in the Chicago area, and researchers believe climate change is behind it.

These were, among other things, the results of a new study published in Journal of Animal Ecology. The researchers compared the recent observations to centuries-old eggs kept in museum collections.

“We have learned that Chicago-area birds, at least some species, are now nesting 25 days earlier than they did in the early 19th and late 18th centuries,” said John Bates, curator of birds at the Chicago Field Museum and the lead author of the Study. “The essence of this study was to examine whether or not bird species in northeastern Illinois change their oviposition dates over time.”

The museum has 50,000 to 60,000 eggs in its collection dating from the 1870s to the 1920s. The collection contains information about the eggs. The Field’s collection, like most, dates back to the 1920s, when collecting eggs went out of fashion for hobbyists and scientists.

The results were consistent with other things happening in the environment because of climate change, Bates said.

“Insect numbers have been shown to be declining as well, although again it’s difficult to have good data on what each insect species is doing,” he said. “And insects, in turn, respond to the falling out of plant leaves, and that’s also something that’s moving forward in time.”

  • Study: Many birds nest and lay eggs earlier in Chicago

    The Field Museum’s Bird Division Egg Collection will be on display in Chicago on Wednesday, March 23, 2022. Many bird species are nesting and laying eggs nearly a month earlier than they were 100 years ago in the Chicago area, and researchers believe climate change is behind it. These were among the findings of a new study published in the Journal of Animal Ecology. The researchers compared the recent observations to centuries-old eggs kept in museum collections. Credit: E. Jason Wambsgans /Chicago Tribune via AP

  • Study: Many birds nest and lay eggs earlier in Chicago

    Cedar waxwing eggs collected in 1897 in the Field Museum’s Bird Division egg collection are on display Wednesday, March 23, 2022 in Chicago. Many bird species are nesting and laying eggs nearly a month earlier than they were 100 years ago in the Chicago area, and researchers believe climate change is behind it. These were among the findings of a new study published in the Journal of Animal Ecology. The researchers compared the recent observations to centuries-old eggs kept in museum collections. Credit: E. Jason Wambsgans /Chicago Tribune via AP

  • Study: Many birds nest and lay eggs earlier in Chicago

    Murre eggs on display in the Field Museum’s Bird Division egg collection on Wednesday, March 23, 2022 in Chicago. Many bird species are nesting and laying eggs nearly a month earlier than they were 100 years ago in the Chicago area, and researchers believe climate change is behind it. These were among the findings of a new study published in the Journal of Animal Ecology. The researchers compared the recent observations to centuries-old eggs kept in museum collections. Credit: E. Jason Wambsgans /Chicago Tribune via AP

The study not only serves as a warning about climate change, but also highlights the importance of museums’ egg collections, which are often underutilized.

“There are 5 million eggs in collections worldwide, and yet there are very few publications using museum collections of eggs,” Bates said. “They are a treasure trove of data about the past and can help us answer important questions about our world today.”


Birds lay their eggs earlier and climate change is to blame


More information:
John M. Bates et al., Climate Change Affects Bird Nesting Phenology: Comparing Contemporary Field and Historical Museum Nesting Records, Journal of Animal Ecology (2022). DOI: 10.1111/1365-2656.13683

© 2022 The Associated Press. All rights reserved. This material may not be published, broadcast, transcribed or redistributed without permission.

citation: Study: Many Birds Nest, Lay Eggs Earlier in Chicago (2022, April 4) Retrieved April 4, 2022 from

This document is protected by copyright. Except for fair trade for the purpose of private study or research, no part may be reproduced without written permission. The content is for informational purposes only.

https://phys.org/news/2022-04-birds-eggs-earlier-chicago.html Many birds nest and lay eggs earlier in Chicago

Russell Falcon

TheHitc is an automatic aggregator of the all world’s media. In each content, the hyperlink to the primary source is specified. All trademarks belong to their rightful owners, all materials to their authors. If you are the owner of the content and do not want us to publish your materials, please contact us by email – admin@thehitc.com. The content will be deleted within 24 hours.

Related Articles

Back to top button