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  • How are Illinois birds faring?

    Thomas J. Benson leads the Critical Trends Assessment Program, which monitors the biological condition of Illinois’ forests, wetlands and grasslands, and collects data on plants, birds and arthropods.

    Thomas J. Benson leads the Critical Trends Assessment Program, which monitors the biological condition of Illinois’ forests, wetlands and grasslands, and collects data on plants, birds and arthropods.

    Photo by L. Brian Stauffer

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  • The Illinois Natural History Survey is a division of the Prairie Research Institute at the University of Illinois.

    The study, “Decline of the North American Avifauna,” is available online and from the U. of I. News Bureau.
    DOI: 10.1126/science.aaw1313 

    To contact Thomas J. Benson, call 217-265-6242; email tjbenson@illinois.edu.