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Natural History Survey

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  • bluegill fish

    Friendlier fish may be quicker to take the bait

    Jul 16, 2018 2:00 pm

    The bluegill on your dinner plate might have been more social than the rest of its group, according to a new study from the University of Illinois, and its removal from the lake could mean major changes for the remaining population.

  • Eastern massasauga rattlesnake

    For now, Illinois’ imperiled eastern massasauga rattlesnakes retain their genetic diversity

    Aug 13, 2018 9:15 am

    Habitat loss, habitat fragmentation and the loss of genetic diversity are the three main factors driving the extinction of many wild species, and the few eastern massasauga rattlesnakes remaining in Illinois have certainly suffered two of the three. A long-term study of these snakes reveals, however, that – despite their alarming decline in numbers – they have retained a surprising amount of genetic diversity.

  • snake

    Snake fungal disease alters skin microbiome in eastern massasaugas

    Aug 16, 2018 3:30 pm

    In the first study of its kind, researchers characterized the skin microbiome of a population of free-ranging snakes to begin to understand how the animals’ environmental microbial community may promote disease resistance as well as how it may be disrupted by infection.

  • It's mussel time!

    Aug 30, 2018 8:30 am

  • Researchers rescued stranded mussels on the Vermilion River

    Aug 31, 2018 11:00 am

  • Researchers photograph bats under bridges with a borescope

    Oct 9, 2018 2:30 pm

  • Girl Scouts provided habitat for Illinois bats

    Oct 29, 2018 1:45 pm

    When it came to earning their Silver Award, which encourages scouts to complete a project that helps their community, Girl Scout Troop 51978 from Westmont, Illinois, decided to support bat conservation with help from Illinois Natural History Survey associate mammalogist Tara Hohoff.

  • two men hold tray of insect specimens

    Effort clarifies major branch of insect tree of life

    Nov 26, 2018 2:30 pm

    A study published in the Proceedings of the National Academy of Sciences collected a vast amount of molecular data on the Hemiptera order of insects and used the information to help tease out their family relationships and evolutionary history.

  • Man holding two large fungi

    North American checklist identifies the fungus among us

    Nov 28, 2018 9:15 am

    A new checklist of North American fungi published this month in the journal Mycologia “provides the basis for understanding our national mycoflora,” according to mycologist Andrew Miller, who led the effort to compile the data.

  • Finding darters where no one thought to look

    Nov 29, 2018 11:45 am

    INHS staff spent the last two summers sampling small, overlooked streams throughout much of the greater Chicago region and discovered that the Iowa darter has been hiding out in streams so small that biologists haven’t bothered to sample them. It appears that there are enough healthy populations in these small streams that this fish is in the process of being taken off the state threatened-species list.

  • Saving our natural heritage, one stopper at a time

    Dec 12, 2018 10:00 am

    The INHS Insect Collection holds more than 350,000 vials with more than 3 million insect and arthropod specimens inside. About 70 percent of these are in vials with stoppers that are – or could soon be – melting. A National Science Foundation grant supports our efforts to replace these stoppers and protect these specimens.

  • Camera trap study reveals the hidden lives of island carnivores

    Dec 21, 2018 11:30 am

  • Conservation efforts help some rare birds more than others, study finds

    Jan 23, 2019 9:30 am

  • Survey seeks ideas to help specialty crop growers make pest control decisions

    Feb 19, 2019 10:15 am

    Researchers at the University of Illinois’ Prairie Research Institute are developing new pest degree day tools for the state’s specialty crop growers. A short online survey offers growers the opportunity to contribute their opinions on how this information is delivered.

  • Ant in the Sanderson collection

    National Science Foundation awards more than $480,000 to amber preservation project

    Mar 6, 2019 8:15 am

    The National Science Foundation has awarded more than $480,000 to a Prairie Research Institute project to preserve and digitize an extensive collection of Dominican amber that is in danger of deterioration without proper curation and care. The plants, arthropods, and vertebrates captured in the amber provide insights into life 16-18 million years ago, during the Early Miocene epoch.

  • Buckeye butterfly

    Become a citizen scientist for pollinators with University of Illinois

    Mar 6, 2019 4:45 pm

    University of Illinois Extension is calling all lovers of bees, butterflies, and other pollinators that keep our crops and gardens growing to join scientists in tracking their distribution and habitat use across the state, from the comfort of your home, school, or community garden.

  • Jim Lamer

    INHS welcomes Jim Lamer as director of the Illinois River Biological Station

    Mar 11, 2019 12:30 pm

    Jim Lamer joined the Illinois Natural History Survey as a large river ecologist and director of the Illinois River Biological Station in Havana. 

  • Bitter cold in January likely won’t reduce field crop pests in the spring

    Mar 14, 2019 1:30 pm

    Despite the record cold air temperatures, soil temperatures averaged slightly warmer than normal this winter. Consequently, the Arctic conditions are expected to have little effect on overwintering field crop insect pest populations.

  • Monarch butterfly

    Butterflies of Illinois field guide is now available from University of Illinois Press

    May 14, 2019 2:15 pm
  • fox in snow

    'Citizen scientists' help track foxes, coyotes in urban areas

    Jun 4, 2019 12:45 pm

    As foxes and coyotes adapt to urban landscapes, the potential for encounters with humans necessarily goes up. A team of scientists is taking advantage of this fact to enlist the eyeballs and fingertips of humans – getting them to report online what they see in their own neighborhoods and parks.

  • non-native cattail

    Aggressive, non-native wetland plants squelch species richness more than dominant natives do

    Jun 19, 2019 9:15 am
  • Dr. Jelka Crnobrnja-Isailovic and Jaclyn Adams working with a snake in a field of grass

    Uncovering the mystery of Kirtland's snakes

    Jun 20, 2019 4:00 pm

    The Kirtland's snake is shy and secretive, and, as a result, not a lot is known about it. A group of researchers is working hard to change that. They're developing a better understanding of this small but beautiful snake that is widely scattered in small enough numbers to put it on Illinois' threatened species list.

  • Serina Taluja scans a plant specimen from the INHS herbarium

    Bringing yesterday's plants to digital life

    Jul 31, 2019 11:00 am
  • jumping silver carp

    Assessment of Asian carp in Illinois waterways

    Sep 5, 2019 9:30 am

    Scientists and policymakers have long struggled with managing Asian carp numbers in Illinois waterways. PRI's Joe Parkos and Steve Butler explain what's working to scale back these intruders as they inch toward the Great Lakes.

  • eDNA helps researchers track and identify endangered and at-risk species

    Sep 10, 2019 8:00 am

    A promising technology and unlikely collaboration give scientists greater insights into five rare and hard to find species in Fort Polk, Louisiana. 

  • Recent surveys find few of once-common bat species

    Sep 10, 2019 3:30 pm

    Bat species that used to be common in Illinois are scarce in recent surveys, sending up a red flag.

  • Forests help shield streams from pollutants in cropland areas

    Sep 16, 2019 10:00 am

    Streambank forests that help to buffer streams from pollutants are particularly important for stream quality, even in areas such as east-central Illinois where cropland predominates and the river system has deteriorated, according to a University of Illinois study.

  • Survey shows species of marsh birds that decline when nearby cities thrive

    Sep 17, 2019 10:30 am

    Wading into the springtime muddy marshland, pushing aside a wall of plants taller than her head, ornithologist Anastasia Rahlin looks and listens for signs of black terns and yellow-crowned night herons. She plays a recording, waits 30 seconds, and listens for a return call. The species of birds that she doesn’t find in the marsh are the ones she doesn’t want scientists to forget.

  • Bass learn from experience not to take the bait

    Sep 27, 2019 2:15 pm

    Largemouth bass apparently don’t learn to avoid fishing lures from other bass but instead from their own past experiences, according to University of Illinois research.

  • How are Illinois birds faring?

    Sep 30, 2019 8:00 am

    According to a new study reported in the journal Science, bird populations in North America have experienced a troubling decline in the past five decades. The scientists estimate the continent has lost close to 3 billion birds, roughly 29% of their total numbers in 1970.

  • Purple martin migration behavior perplexes researchers

    Sep 30, 2019 9:15 am

    Purple martins will soon migrate south for their usual wintertime retreat, but this time the birds will be wearing what look like little backpacks, as scientists plan to track their roosting sites along the way.

  • male and female cowbird on a fence

    Illinois study finds surprising level of monogamy among cowbirds

    Oct 2, 2019 9:00 am

  • Scientists foretell the fate of Illinois’ threatened and endangered plants in a changing climate

    Oct 11, 2019 8:00 am

    Scorching summers are predicted for Illinois’ future, threatening already vulnerable plant species. University of Illinois scientists have presented a new way to prioritize restoration efforts, not necessarily focusing on the most precarious plants.

  • plants and fungi

    Fire-spawned forest fungi hide out in other organisms, study finds

    Oct 25, 2019 6:45 am

    When a wildfire obliterates a forest, the first life to rise from the ashes is usually a fungus – one of several species that cannot complete its life cycle in the absence of fire. Scientists have long argued about where and how such pyrophilous (fire-loving) fungi survive, sometimes for decades, between fires. A new study finds that some of these fungi hide out in the tissues of mosses and lichens.

  • copperhead snake photo by Chuck Smith

    Severe drought shuts down reproduction in copperhead snakes, study finds

    Oct 29, 2019 8:15 am

    A long-term study of copperhead snakes in a forest near Meriden, Connecticut, revealed that five consecutive years of drought effectively ended the snakes' reproductive output.

  • INHS joins effort to digitize North American parasite collections

    Nov 5, 2019 7:00 am

    The Illinois Natural History Survey (INHS) joins Purdue University and 25 other institutions to lead an effort to modernize the world’s knowledge of arthropod parasites by digitizing more than 1.3 million specimens using a three-year, $4.3 million National Science Foundation (NSF) grant.

  • Owls eat roadkill, research finds

    Nov 18, 2019 9:30 am

    Owls have never been known as scavengers that eat decaying flesh, but the behavior is more widespread than once believed, according to University of Illinois researchers at the Illinois Natural History Survey (INHS) who photographed owls scavenging in the night.

  • INHS staffer makes massive contribution to species name index

    Nov 22, 2019 2:30 pm

    In a project to build an index containing the names of all biological species found on earth, Illinois Natural History Survey (INHS) informatician Dmitry Mozzherin and the HathiTrust team scanned one-tenth of all published human knowledge on occurrences of scientific names in less than a day.

  • Researchers describe crayfish conservation concerns and strategies

    Jan 30, 2020 8:45 am

    Whether you call them crayfish, crawfish, or crawdad, this creature needs protection nationwide to prevent extinction, according to Chris Taylor, Illinois Natural History Survey curator at the University of Illinois. In a recent article published in the journal Hydrobiologia, Taylor and colleagues have outlined possible strategies for conservation practices to protect crayfish from invasive species, habitat changes, and potential overexploitation.

  • Sumatran tiger captured by camera trap

    Camera-trap study captures Sumatran tigers, clouded leopards, other rare beasts

    Feb 24, 2020 2:00 pm

    Scientists deployed motion-sensitive camera traps across a 50-square-mile swath of Bukit Barisan Selatan National Park in southern Sumatra and, over the course of eight years, recorded the haunts and habits of dozens of species, including the Sumatran tiger and other rare and endangered wildlife. Their observations offer insight into how abundant these species are and show how smaller creatures avoid being eaten by tigers and other carnivores.

  • Amblyomma maculatum (Gulf coast tick), female (left) and male (right)

    Disease-carrying coastal tick established in Illinois

    Mar 12, 2020 8:00 am

    Researchers at the Illinois Natural History Survey and Southern Illinois University have new evidence of the Gulf Coast tick becoming established in Illinois. They also have found that it often harbors a pathogen that can make people sick. 

  • The insect now known as Kaikaia gaga, a new genus and species of treehopper.

    Grad student names new treehopper species after Lady Gaga

    Mar 16, 2020 9:00 am

    The insect now known as Kaikaia gaga represents a new genus and species of treehopper.

  • Learn to Hunt Program bases hunter recruitment on science

    Mar 26, 2020 8:45 am

    Today’s hunters are more diverse and more likely to hunt for the meat than for the camaraderie of fellow hunters than in generations past. Understanding these motivations and constraints with scientific data helps staff of the Illinois Natural History Survey’s (INHS) Learn to Hunt Program draw new hunters to the activity.

  • cluster of Humboldt penguins on the shoreline

    Blood markers predict Humboldt penguin nest type, reproductive success

    Jun 2, 2020 8:45 am

    Researchers looked at metabolic markers in the blood of 30 Humboldt penguins nesting in the Punta San Juan Marine Protected Area in Peru, finding that penguins in guano-rich burrows and unsheltered locations had consistent – and distinct – patterns of several sugars in their blood. 

  • Asian tiger mosquito

    Asian tiger mosquito gains ground in Illinois

    Jun 4, 2020 8:15 am

    Researchers report that the Asian tiger mosquito, Aedes albopictus, has become more abundant across Illinois in the past three decades. Its spread is problematic, as the mosquito can transmit diseases–like chikungunya or dengue fever–to humans.

  • Researchers studied bobcat population in Wisconsin.

    Researchers find that data from hunters can help assess bobcat population

    Jun 11, 2020 12:00 pm

    Wildlife managers track animal groups to control populations and determine the number of permits provided to hunters and trappers each year. Whether data are taken from the forest or from hunter surveys, their accuracy is necessary to inform conservation, according to Javan Bauder, post-doctoral researcher at the University of Illinois’ Illinois Natural History Survey.

  • Bobwhites nesting in a field of flowers.

    Bobwhites listen to each other when picking habitat

    Jun 18, 2020 8:00 am

    Northern bobwhites are attracted to a habitat based on whether other bobwhites are present there, research led by Illinois Natural History Survey avian ecologist Michael Ward. This phenomenon, called conspecific attraction, could aid conservation efforts.

  • female cowbird and male cowbird perched on wire fence

    Cowbirds change their eggs’ sex ratio based on breeding time

    Jun 24, 2020 9:15 am

    Brown-headed cowbirds show a bias in the sex ratio of their offspring depending on the time of the breeding season, researchers report in a new study. More female than male offspring hatch early in the breeding season in May, and more male hatchlings emerge in July.

  • Tommy McElrath wields a net in Trelease prairie

    Chasing bumble bees on a patch of prairie

    Jul 21, 2020 8:00 am

    Illinois Natural History Survey insect collection manager Tommy McElrath conducts surveillance for bees at the prairie near the University's Trelease Woods. Only 11 of the 18 bumblee bee species historically collected in Illinois have been seen in the last 15 years. Of those remaining here, three are endangered or threatened.

  • hands using tweezers to insert a tick into a tube

    Lone Star ticks in Illinois can carry, transmit Heartland virus

    Jul 23, 2020 9:45 am

    Researchers have confirmed that Heartland virus, an emerging pathogen with potentially dire consequences for those infected, is present in Lone Star ticks in two Illinois counties hundreds of miles apart. The findings are reported in the journal Emerging Infectious Diseases.