blog navigation

Natural History Survey

blog posts

  • Vector mosquitoes detected earlier than expected

    Jun 21, 2011 8:00 am

    INHS Medical Entomologist Richard Lampman was featured on a News Channel 15 story about mosquitoes.  Because of all of the rain, the "nuisance" mosquito population is expected to be above average. The recent hot dry weather has resulted in "vector" or disease-carrying mosquito eggs being found earlier than expected this year.

  • two yellow prothonotary warblers perched on a branch

    Warmer springs mean more offspring for prothonotary warblers

    Dec 9, 2020 8:30 am

    Climate change contributes to gradually warming Aprils in southern Illinois, and at least one migratory bird species, the prothonotary warbler, is taking advantage of the heat. A new study analyzing 20 years of data found that the warblers start their egg-laying in southern Illinois significantly earlier in warmer springs. This increases the chances that the birds can raise two broods of offspring during the nesting season, researchers found.

  • Waterfowl counts higher than average

    Nov 16, 2012 8:00 am

    INHS Waterfowl Ecologist Aaron Yetter conducts weekly aerial surveys and on Nov 13 found more waterfowl than average for this time of year. Yetter counted 305,310 ducks along the Illinois River compared to the10-year average of 234,434 birds for this same week and 356,735 ducks on the Upper Mississippi River compared to the 10-year average of 226,801 birds. "It looks like we got a big push of new mallards. We also have well above average numbers of pintails, gadwalls, lesser scaup and other species," Yetter said.

  • Waterfowl numbers better than last year

    Dec 14, 2011 8:00 am

    Aerial surveys this November showed 20 times more ducks on Lake Chautauqua than during the same period last year. The Green-winged Teal made up the majority of those waterfowl, with conditions on the lake this year being favorable. INHS Waterfowl Biologist Randy Smith said, "Green-winged teal like it when the water is so shallow that they can stand up, just an inch or two deep with lots of vegetation." This year's surveys have found that Lake Chautauqua has more than one third of all the ducks at the 16 sites sampled in the Lower Mississippi River Valley.

  • Waterfowl study helps evaluate Illinois River habitat

    Apr 13, 2012 10:00 am

    INHS Waterfowl Biologists have been monitoring restored wetlands along the Illinois River to determine if restoration efforts have been successful for waterfowl populations. Chris Young of the State Journal Register went along and documented the diving duck surveys.

  • Tiemann snorkels in Rio Valles

    Weightless in San Luis Potosi

    Dec 21, 2017 10:15 am

    Field biologist Jeremy Tiemann describes a recent trip to the Valles River basin in the Mexican state of San Luis Potosi to collect freshwater mussels. 

  • Western corn rootworm beetles likely to emerge soon

    Jun 4, 2012 8:00 am

    INHS Insect Behaviorist Joe Spencer has observed corn rootwork larvae in their second instar, which indicates the adults can be expected to emerge in about 2 weeks. This is earlier than previous years, but not unexpected given the warm spring.

  • Western corn rootworm behavior in soybeans offers clues to understanding rotation resistance

    Oct 28, 2021 8:45 am

    Illinois farmers’ concerns about increasing western corn rootworm populations and plant damage in rotated cornfields have University of Illinois researchers taking a closer look at how rootworm diets affect the beetles’ flights from soybeans to cornfields.

  • Western corn rootworm developing resistance to rotation

    Sep 4, 2013 8:30 am

    INHS Behavioral Entomologist Joe Spencer is looking at rotation-resistant western corn rootworms, which are causing severe injury to crops. Crops modified to resist infestation by insects and crop rotation are some of the methods to control injurious insects, but some rootworms have developed resistance to these mechanisms. Repeated use of the modified corn year after year has given the rootworms time to adapt. Producers are encouraged to watch their fields for injury. This story was reported in InvestorPlace and the Bulletin.

  • Western corn rootworm webinar

    Jul 28, 2011 2:00 am

    INHS Behavioral Entomologist Joe Spencer recently presented a webinar on Western Corn Rootworm, a longtime pest of corn crops in the United States. INHS scientists have been studying WCR, and ways to control them, for over 100 years. This webinar presents a review of WCR biology, the history of corn rootworm as a pest species and the WCR's adaptation to crop rotation that began in Illinois. The use of Bt-transgenic corn for rootworm management is introduced along with assumptions about WCR behavior in refuge and Bt corn. Data on WCR behavior and mating in several different configurations of refuge and Bt- corn are presented to illustrate how the placement of refuge affects the biology and ecology of mating WCR beetles.

  • West Nile found in Champaign county mosquitoes

    Aug 15, 2011 8:00 am

    INHS Medical Entomology Program confirmed the presence of West Nile Virus in a mosquito sample from the Champaign Department of Public Health. Champaign is the 12th county to have positive mosquito samples this year. No human cases have been reported yet this year, but the CDPH recommends dumping standing water and taking general precautions.

  • West Nile Virus confirmed in Evanston

    Jul 14, 2014 8:00 am

    The Illinois Natural History Survey Medical Entomology Lab has reported the first positive tests for West Nile Virus this year from samples collected in Evanston. For more information, visit the Medical Entomology Program website.

  • Where the wild turkeys aren't

    May 12, 2017 8:00 am

    The wild turkeys have not been cooperating with avian ecologist Christine Parker as she attempts to catch, weigh, measure, and fit them with micro-GPS units to learn about their habits.

  • White Nose Syndrome confirmed in Illinois

    Feb 28, 2013 8:00 am

    INHS researchers and their collaborators have confirmed the presence of White Nose Syndrome (WNS)—a disease fatal to several of our bat species—in Illinois. Read more about WNS and the work INHS researchers are doing to understand the disease on the INHS website.

  • White Nose Syndrome found in three additional counties

    May 20, 2015 8:00 am

    White Nose Syndrome, the fungal disease that leads to mortality in bats, has now been confirmed in 11 counties in Illinois. First discovered in New York in 2006, the fungus has spread west, first being detected in Illinois in 2013. INHS Cave Biologist Steve Taylor told an NPR affiliate that, "between 2013 and 2015, it was like a 95 percent decrease in the number of bats at this site, which in 2013 was in excess of 25,000 bats."

  • Why do ducks eat that?

    May 15, 2017 2:45 pm

  • Widespread Shallow Groundwater Contamination Found in Southwestern Illinois Cave Streams and Springs

    Nov 17, 2016 8:00 am

    Researchers have detected prescription and over-the-counter medications and personal care products in Illinois groundwater, an indication that humans are contaminating water that is vital to aquatic life.

  • Winter bald eagle count a new record

    Feb 25, 2008 8:00 am

    In an article published February 23, 2008 in The Daily Journal, Survey scientist Randy Nyboer discusses the this year's record bald eagle count. Though the count is unfinished, it has already surpassed previous records. Visit this website to view the complete article.

  • Winter tips for bird feeders

    Feb 25, 2008 12:00 am

    Christopher Whelan, an avian biologist with the Illinois Natural History Survey, recently offered some tips for keeping overwintering birds in your yard. The tips were featured in the Like an Eagle-Soar blog and were offered through the National Wildlife Association.

  • Working with scientists better informs managers’ decisions on bird conservation

    Jun 9, 2021 10:45 am

    Scientists studying birds have the data, and conservation managers make the decisions in the field, but if the two groups collaborate, together they can form the best outcomes on real-world bird conservation issues.

  • Yeast byproduct inhibits white-nose syndrome fungus in lab experiments

    Jul 21, 2015 10:00 am

  • Zebra finch study finds mixed impact of early-life stress

    Jun 19, 2017 10:45 pm

    A bout of early-life stress can have lifelong impacts on two key signals that help male zebra finches attract mates: beak color and song complexity. But rather than being uniformly negative, a recent study published in Functional Ecology found that the consequences of stress are mixed. Stressed males wind up with duller, less colorful beaks but sing more complex songs.

  • Zebra mussels found in DuPage Co.

    May 26, 2009 3:30 pm

    Kristin TePas, Aquatic Nuisance Species Assistant Coordinator with the Illinois Natural History Survey's Lake Michigan Biological Station, is quoted in four articles describing the zebra mussel's appearance in Bartlet, IL at the Deep Quarry Lake. The appearance of the mussels in the lake is concerning to scientists as they are an invasive species, and have not previously been documented there. The articles can be accessed via NewsBank: