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  • 25 Butterflies and Moths Found in the Judy Istock Butterfly Haven

    Created: 4/24/2018      Updated: 4/5/2019

    Longwing butterfly

    From longwings to swallowtails, from pansies to owls, there are an incredible number of butterfly and moth species that can be found in our signature exhibit - the Judy Istock Butterfly Haven. In 2017 alone, more than 100 species took flight in the Butterfly Haven. Although some butterflies are only around for a short period of time throughout the year, there are a number of species you're likely to find on any given Butterfly Haven visit. Below is a list of the top 25 most common species you can see in the Butterfly Haven.

    25 common species you can find in the Judy Istock Butterfly Haven

    • Heliconius melpomene

      Common postman butterfly

    • Heliconius doris

      Doris longwing butterfly

    • Clipper butterfly

      Parthenos sylvia

      Clipper butterfly

    • Leopard lacewing

      Cethosia cyane

      Leopard lacewing butterfly

    • Morpho butterfly

      Morpho peleides

      Common morpho butterfly

    • rusty-tipped page butterfly

      Siproeta epaphus

      Rusty-tipped page butterfly

    • Malay cruiser butterfly

      Vindula dejone

      Malay cruiser butterfly, Erichson's cruiser butterfly

    • Rice Paper butterfly

      Idea leuconoe

      Paper kite butterfly, rice paper butterfly

    • malachite butterfly

      Siproeta stelenes

      Malachite butterfly

    • Sara longwing butterfly

      Heliconius sara

      Sara longwing butterfly

    • By Hectonichus - Own work, CC BY-SA 3.0,

      Heliconius ismenius

      Ismenius tiger longwing butterfly

    • Tiger longwing butterfly

      Heliconius hecale

      Tiger longwing butterfly

    • Great eggfly butterfly

      Hypolimnas bolina

      Great eggfly butterfly, common eggfly butterfly

    • By D. Gordon E. Robertson - Own work, CC BY-SA 3.0,

      Catopsilia scylla

      Orange emigrant butterfly

    • By Alexey Yakovlev - Own work, CC BY-SA 4.0,

      Heliconius atthis

      False zebra longwing butterfly

    • Red rim butterfly

      Biblis hyperia

      Red rim butterfly

    • Cydno longwing butterfly

      Heliconius cydno

      Cydno longwing butterfly

    • king swallowtail butterfly

      Papilio thoas

      Thoas swallowtail butterfly, king swallowtail butterfly

    • Atlas moth

      Attacus atlas

      Atlas moth

    • By Anne Toal from US - Ruby-spotted swallowtail, ventral, CC BY 2.0,

      Papilio anchisiades

      Ruby-spotted swallowtail butterfly

    • Common green birdwing butterfly

      Ornithoptera priamus

      Common green birdwing, Cairn’s birdwing

    • By Greg Hume - Own work, CC BY-SA 4.0,

      Hypna clytemnestra

      Jazzy leafwing butterfly, marbled leafwing, silver studded leafwing

    • chocolate pansy butterfly

      Precis iphita

      Chocolate pansy butterfly

    • Giant owl butterfly

      Caligo memnon

      Giant owl butterfly

    • By Bernard DUPONT from FRANCE - Great Mormon (Papilio memnon), CC BY-SA 2.0,

      Papilio memnon

      Great Mormon butterfly

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  • Standing for science. Always.

    Created: 4/13/2018      Updated: 4/16/2018

    Museum staff and volunteers at the 2017 March for Science

    Every day we use, apply and celebrate science here at the Chicago Academy of Sciences / Peggy Notebaert Nature Museum. It is a privilege to welcome our guests and curious students into the wonders of nature – wonders that are more easily understood and appreciated because of science.   

    Our team stands in solidarity today with people around the world who are participating the second annual March for Science, a public testament that science matters in our lives.

    I strongly support the idea of standing up for science. It can help raise public understanding of the importance of scientific study to people, wildlife and nature. Our values at the Academy and Nature Museum are seeded in discovery, research, education and science.

    Perhaps today’s March for Science can inspire more people to be curious, to seek facts and to defend scientific study, on which our lives depend. My hope is that it also stimulates public discussion and a quest for knowledge by people of all ages.

    The Academy has led scientific discovery in the Chicago region for more than 160 years. We offer this knowledge and rich history to the public every day. From our region’s natural history that is preserved and studied in the Academy, to the engaging experiences like seeing the exotic and complex species from around the world in our newest exhibit, Birds of Paradise, we make science fun and empowering.

    Museum staff standing for science

    I invite you to join us today in celebration of the March for Science. Come to the Nature Museum and make your own statement of support with a family photo or selfie in front of our proud “We Stand for Science” sign in our lobby. And then have fun enjoying science here and at other science-based museums that are our sister Museums in the Park institutions.

    Let’s make it a great day for science.

    Deborah Lahey, CEO & President

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  • Women's natural role is nurturing and protecting nature

    Created: 3/29/2018      Updated: 3/31/2018

    Academy scientist working with wet collection specimen

    Women around the world, including here in Chicago and at the Nature Museum, bring a special passion and instinctual drive to nurturing nature. Perhaps it is the desire to help things grow, or to protect those things most vulnerable.

    Whether planting a pollinator garden or teaching children to care for living things, women often lead – quietly and with great care  efforts to nurture nature. Women’s History Month is a reminder for us to reflect on the profound contributions women make to protect the Earth and all living things.

    Elizabeth Emerson AtwaterElizabeth Emerson Atwater

    At our Academy of Sciences one of the first botanists to donate an important collection of Illin  ois specimens in the 1850s was Elizabeth Emerson Atwater. Her work continues to inform and inspire the study of regional plants and wildlife today.

    Allison Sacerdote-VelatAllison Sacerdote-Velat

    Our legacy of female scientists continues at the Nature Museum through our dedicated team members and partners. For example, the Nature Museum’s curator of herpetology, Allison Sacerdote-Velat, is working to save several regional species, such as the wood frog and smooth greensnake. As a scientist, her studies include reintroducing and monitoring these fragile populations.

    Nancy TuchmanNancy Tuchman

    Two of our Museum’s academic partners help lead work to sustain our planet’s environments. Loyola University’s Nancy Tuchman is the founding director of Loyola’s Institute of Environmental Sustainability, which co-sponsors workshops and programs with the Nature Museum and teaches the next generation of people committed to sustainable living and work.

    May Berenbaum and Barack Obama May Berenbaum receiving the National Medal of Science from President Barack Obama

    A mentor to many here, May Berenbaum is head of the Department of Entomology at the University of Illinois at Urbana-Champaign and is known for applying ecological principles in developing sustainable management practices for natural and agricultural communities. 

    These women supporting work at the Nature Museum are among many in the Chicago region making a difference to nature and conservation. They inspire future botanists, biologists, and other scientists including the youth in our Museum’s many science education programs.

    Rachel Carson Wangari Maathai
    Rachel Carson; Wangari Maathai with Barack Obama

    Those of us working on behalf of nature today draw inspiration from leader like Rachel Carson, who risked her career as she fought for environment protection and the health of children through her research and book, “Silent Spring,” that proved the ill-effects of DDT; and Wangari Maathai, the first African woman to win the Nobel Peace Prize, who created a tree-planting movement that saved the lives of wildlife and people. She founded the Green Belt Movement that engaged women in planting thousands of trees in African regions, thus empowering women to restore the environment and improve their families’ lives with access to wood.

    Let’s carry on the legacy of women saving nature. Who inspires you to care for nature? I would love to hear from you about who is your nature heroine.

    Deborah Lahey, President & CEO

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  • Metamorphosing Monarchs

    Created: 3/14/2018      Updated: 3/14/2018

    Happy #LearnAboutButterfliesDay, everyone! Although every day is Learn About Butterflies Day at the Nature Museum, we thought we would showcase something you don't get to see very often -- the lifecycle of the monarch butterfly! A huge thank you to our Education Department who captured the video of this process. Did you know that we also have a field trip workshop all about monarch butterflies? Click here to learn more.

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  • Let’s work to bring nature’s benefits to all

    Created: 2/26/2018      Updated: 2/26/2018

    With melting snow and the first promising signs of Spring, I’m eager to be outdoors watching for those signs, including feeling warmer moist air, and listening closely for more bird songs. In these reflections, I’m reminded how fortunate I am to have access to nature through urban parks, trees, gardens, rivers, and our beloved Lake Michigan.

    Multiple studies prove there are many physical and psychological benefits to spending time in nature. But in reality, too many people don’t have equal access to these benefits. This is especially true for people living in predominantly African American neighborhoods in cities throughout this Chicagoland region. In many underserved communities there are significant barriers – transportation, safety, proximity, awareness – to enjoying parks, trees, school gardens, forest preserves and community green spaces.

    I strongly believe every person – especially every child – should be able to experience the gifts and benefits of nature. Addressing this issue is particularly profound as we reflect during Black History Month on how we must collaborate to create more nature equality.

    We need more visible environmental champions to challenge the status quo and fight barriers to a healthy environment. Environmental justice advocates like Dr. Robert Bullard, known by many as the “father of the environmental justice movement,” have increased the understanding of environmental racism and have led an important movement to end injustice that hurts many minority communities. 

    And I’m thankful for historic leaders like botanist George Washington Carver, who discovered healing and agricultural properties of plants and revolutionized farming practices. He faced immeasurable obstacles because of his race, but his intellect and determination helped pave the way for future African American scientists.  

    Nature offers many benefits to minority youth, which is why the Peggy Notebaert Nature Museum places the highest priority on taking nature and science education programs to underserved communities, and on creating greater awareness and opportunities to experience urban nature. Everyone deserves to enjoy the benefits of nature and of being outdoors.

    Nature access and education can create more racially, socially and economically equitable communities. During this reflective time of year, let’s renew our commitment to environmental justice for all.  

    Deborah Lahey, President & CEO

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  • Why are tropical birds so colorful?

    Created: 1/22/2018      Updated: 1/22/2018

    In this series, we'll be addressing some common questions from visitors and readers. Do you have a science question that has you stumped? Ask our museum scientists via our form here and we'll answer it on our blog!

    Today's Question: Why are tropical birds so colorful?

    Parrots, macaws, parakeets… these rainbowed tropical birds put to shame the brown and gray birds that are so common in Illinois and Chicago. Even Chicago's brightest birds—cardinals, blue jays, gold finches—are vibrant, but single-colored. Why are bright and multi-colored birds so common in tropical rain forests, and nowhere to be found in temperate climates like Chicago? Do the changing seasons make bright birds sitting ducks in the winter? Do jungle birds eat bright berries and fruits instead of brown and black seeds? What gives?

    This Northern Cardinal is just one color: red. No one is flocking to see this bird in a zoo. Coincidence? No.[1]

    We can eliminate one option right away: a parrot's color has nothing to do with its diet. While a flamingo gets its pink color from the food it eats (brine shrimp and blue-green algae) and a cardinal is red in part because of the seeds in its diet[2], a parrot's color is determined by its genes.[3] The incredible colors of the blue-and-yellow macaw do not come from tropical mangoes and imported blueberries.

    Sorry about the awful pun in that other caption. Here, have a picture of an ivory-billed aracari.[4]

    It must be some other quality of the tropics that creates brighter birds: is it the rainfall? The year-round high temperatures?

    The truth is that tropical birds don't tend to be more colorful. Dr. Nicholas Friedman of the Okinawa Institute of Science and Technology explains, "if you look at birds in the tropics, there are a lot of colorful birds that stand out. But there are really more species in general there, and there are just as many more of the little brown ones".[5]

    In other words, the tropics are much more diverse in general than temperate or dry climates. The rainfall and year-round high temperatures contribute to rainforests having many more animal and plant species than other places. Of these many more animal species, some are brightly colored birds, but there are even more species that are plainly colored. The birds that are exported from the rainforests for zoos or as pets are the brightest birds, and these are the tropical birds that we in Chicago are familiar with. This leads to the overall impression that birds from the rainforest are more colorful as a rule, even though it's not actually true!

    This red-crowned ant-tanager is related to the cardinal. It lives in the rainforests of Central and South America, and it is less bright than the Northern Cardinal.[6]

    If you want to know more about tropical birds or even to see them up close, head to The Bird House exhibit at the Peggy Notebaert Nature Museum between now and June 18th to see some colorful birds you can't find in Chicago's trees. You can even see an ivory-billed aracari like the one pictured above during the daily Live Bird Showcase at 11:30am!

    Kyle Schiber
    Nature Museum Volunteer

    By Chris Hachmann (Own work) [CC BY-SA 4.0 (], via Wikimedia Commons

    [2] Koren, Marina. “For Some Species, You Really Are What You Eat”. (April 24, 2013). Retrieved January 8, 2018, from

    [3] Cooke, Thomas F. et al. “Genetic Mapping and Biochemical Basis of Yellow Feather Pigmentation in Budgerigars”. Cell , Volume 171 , Issue 2 , 427 - 439.e21. Retrieved January 11, 2018, from

    By Glenn Bartley. Retrieved from on 1/21/2018

    [5] Okinawa Institute of Science and Technology Graduate University - OIST. (2016, November 4). “Plumage evolution: Explaining the vivid colors of birds.” ScienceDaily. Retrieved January 18, 2018 from

    By Hector Bottai (Own work) [CC BY-SA 3.0 (], via Wikimedia Commons

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  • #MuseumSelfie Day 2018

    Created: 1/17/2018      Updated: 1/17/2018

    We had a blast participating in Museum Selfie Day! We compiled our photos of staff and volunteers, as well as Nature Museum visitors, striking a pose in and around our exhibits and put them all together in one spot. Scroll through and get inspired for your own Museum Selfie! Don't forget, Chicago Museum Week starts tomorrow and on January 20th and January 21st, we're encouraging museum-goers to post their museum selfies once again!

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  • Equality and Inclusion in Nature Education

    Created: 1/11/2018      Updated: 1/15/2018

    Museum educator teaching in a Chicago classroom

    As we reflect on a day dedicated to a fearless and inclusive leader, I am reminded of all the insightful lessons Martin Luther King Jr. has gifted us through his words and actions. These lessons have the ability to resonate with many different elements of our lives.  

    For me, today reminds me of the importance of equality in nature access and environmental education. Regular access to nature, whether it is time outdoors in a park or prairie, sitting next to a lake, or hiking in the forest, is proven to offer many benefits from reducing stress and improving health to increasing creativity and improving children’s aptitude for problem solving that contributes to academic success. The more we learn about the benefits of regular connections and access to nature, the more critical it becomes to ensure equality of access.

    I strongly believe all children should have equal opportunities to experience the gifts and benefits of nature. Unfortunately, there remains a wide gap in equality to access for many children, especially minorities and those who live in cities.

    Our team at the Nature Museum is continually evaluating and extending our reach and offerings with a goal of getting deeper into more Chicago neighborhoods, especially those with diverse populations whose access to nature and environmental education may be limited.

    MLK’s activism was centered around the theme of justice. Today, I’m reflecting on the injustice of the continued diversity divide in nature access and education. It is my goal, and the collective work of our team here at the Nature Museum, to narrow that gap in Chicago by increasing inclusivity and access to nature for all.

    Everyone, especially children, deserve to experience the joys, peace and benefits that nature provides.

    Deborah Lahey, President & CEO

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  • Feeling crazed? Nature offers antidote to hectic holidays

    Created: 12/20/2017      Updated: 1/5/2018

    Winter scene with candles in window

    As much as I love the holiday season, the constant hustle to juggle events, decorate, manage long to-do lists, and prepare for family gatherings can be overwhelming. So let me share an antidote, compliments of nature: Spend time outdoors in a few moments of stillness.

    Call it a nature “time out” or escape outdoors. Our family finds that time in nature, particularly in the quite of winter, is restorative and a time for reflection and connection.

    To me the rhythm of crunching snow underfoot helps me slow down and notice nature’s surprises, like the beauty of the stark trees in the winter cold. After spending some time outdoors, I feel restored and happier during a season that can feel exhausting.

    Let’s not use the excuse that “I don’t have time to stop for nature with so much to do.” A walk outdoors or even standing in your backyard looking at stars slows us down and gives us a quiet moment. Stillness can be energizing. 

    This Thursday is the Winter Solstice, the longest night (or, depending on your perspective, the shortest day) of the year. It is a perfect time to take a moment in nature -- in your backyard or park or forest preserve. 

    If you want to know more about the solstice, I’ve shared a few fun facts below. 

    Also, I would love for you to join us for a season celebration at the Nature Museum in our tradition of welcoming the new year at our Noon-Year’s Eve on Dec. 31, from 11:30am to 12:30pm. The Museum provides many nature moments both inside and outside for your family to enjoy.

    May you find joy in your season celebrations and in nature’s quiet gifts this holiday.       

    Facts about Chicago’s Winter Solstice:

    • Chicago will experience the Winter Solstice on Thursday, Dec. 21, at 10:27 a.m., when the Northern Hemisphere officially welcomes winter.
    • We will experience only 9 hours and 32 minutes of daylight that day.
    • At the same time, our friends in the Southern Hemisphere will celebrate the Summer Solstice.
    • Chicagoans who can’t wait for warm weather can be encouraged that we gain a minute or two of daytime each day beginning Dec. 22 as we march toward summer.

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  • How do Clouds Float?

    Created: 11/30/2017      Updated: 12/5/2017

    In this series, we'll be addressing some common questions from visitors and readers. Do you have a science question that has you stumped? Ask our museum scientists via our form here and we'll answer it on our blog!

    Today's Question:

    How do clouds float?

    Clouds are made of water. Water is denser than air. Water doesn't float in the air. Therefore, clouds can't exist.

    Clearly, that’s not true. Clouds do exist, and they do float in the air. How? Why do clouds form? Do clouds fall to the ground? Why do clouds sometimes disappear?

    Clouds are created from water vapor that condenses into water droplets, and warm air and water vapor will rise above the cold air around it1. Your breath on a chilly winter day or the steam from a tea kettle are examples of water vapor that rises. Are clouds warmer than the surrounding air, and if so, what makes clouds warm?

    Clouds form when the sun creates warm, moist air by heating and evaporating water on the earth’s surface. The warm, moist air is less dense than the cold air above it, so that warm air rises2. The warm air cools as it comes into contact with the cooler air above. Cold air cannot hold as much moisture as warm air: the vapor has to condense into a liquid. This is the beginning of a cloud.

    The sun heats the earth, and causes water on the ground to evaporate3. The water rises, cools, and condenses. A cloud is formed!

    Clouds form when warm wet air rises and condenses in cold air. This explains why clouds exist, but now how do clouds stay in the air? Once the cloud forms in the cold air, why doesn't the cloud cool down and sink back to the ground?

    There are several reasons clouds float: first, the droplets in a cloud are small. Very small. An average water droplet in a cloud may only be 20 micrometers across4. That is half as wide as a typical human hair, and about the same size across as a particle of dust5. Even though dust is heavier than the air around it, a dust particle is so small that it can float in the air for a long time before falling. Water droplets in air behave the same way as dust6.

    The second reason that clouds can float in the air is that there is a constant flow of warm air rising to meet the cloud: the warm air pushes up on the cloud and keeps it afloat.

    Third, clouds stay warmer than the air around them because they absorb the sun’s energy better than the surrounding air7.

    Clouds don't float forever—if the surrounding air warms up, then the air is able to contain the cloud's moisture as vapor, and the cloud will disappear. And sometimes, the cloud becomes so large and moist that the water droplets in the cloud begin sticking to each other, and grow bigger and bigger. The water droplets become so big that they no longer behave like dust particles. The droplets begin to fall. If you look up at this kind of cloud, your face will be wet: those droplets are now called "rain" and you really ought to go inside.

    This map shows how much cloud has fallen to the ground in 2017. More green means more rain8.

    Kyle Schiber
    Nature Museum Volunteer

    [1] Khan, Sal. "Ideal Gas Equation: PV=nRT" Khan Academy. 2017. Retrieved November 27, 2017 from

    [2] NC State University Climate Education for K-12. “How Clouds Form”. (August 13, 2013). Retrieved November 27, 2017, from

    [3] Precipitation Measurement Missions, NASA. “The Water Cycle” diagram by NOAA National Weather Service Jetstream. (June 8, 2011). Retrieved November 27, 2017, from

    [4] Space Math, NASA S’COOL Team. “Cloud Droplets and Rain Drops”. Retrieved November 27, 2017, from

    [5] Engineering Toolbox. “Particle Sizes”. Retrieved November 27, 2017, from

    [6] Scientific American. “Why do clouds float when they have tons of water in them?” (May 31, 1999). Retrieved November 27, 2017, from

    [7] My NASA Data. “Measuring the Temperature of the Sky and Clouds”. (2017). Retrieved November 27, 2017, from

    [8] National Temperature and Precipitation Maps, NOAA. “Total Precipitation, January-October 2017, CONUS”. Retrieved November 27, 2017, from[]=prcp-total#us-maps-select

    Do you have a science question that has you stumped? Ask our museum scientists via our form here and we'll answer it on our blog!

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