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  • Warmer springs mean more offspring for prothonotary warblers

    Photo of a female prothonotary warbler, with her yellow and gray plumage.

    Female prothonotary warblers lay their eggs earlier in the breeding season when local April temperatures are warmer. A new study finds this benefits the birds by enabling them to sometimes fledge additional broods of nestlings.

    Photo by Michael Jeffords and Sue Post*


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  • Editor’s notes

    To reach Jeffrey Hoover, email  

    To reach Wendy Schelsky, email

    The paper “Warmer April temperatures on breeding grounds promote earlier nesting in a long-distance migratory bird, the prothonotary warbler” is available online and from the U. of I. News Bureau.

    DOI: 10.3389/fevo.2020.580725

    *Michael Jeffords and Susan Post are wildlife photographers and research affiliates of the Illinois Natural History Survey at the Prairie Research Institute of the U. of I. Their photographs are available here.