Friday, June 15, 2012

They act like birds, but look like rats...let's learn more about our nighttime friends, the BATS!

Covered in hair, not feathers, bats are mammals...but they aren't rodents (like rats).

Members of the order, Chiroptera (meaning "hand-wing"), bats literally fly with their hands!  Over one quarter of all mammal species are bats, and these creatures can be found all over the world. 

Some are tiny...the size of a bumblebee!
Some are HUGE...the size of a fox!

Only a few actually drink blood, and they do it much like a horsefly.  They take a small bite and lick the drops (most often from animals other than humans). 


Most bats are fruit or insect eaters!  The fruit and nectar eating bats are some of nature's gardeners, helping to spread seeds and pollen from plant to plant. 

Bananas are one of many plants that rely on bats for pollination!






 Other than the fabulous, Stellaluna (J. Cannon), Bat Loves the Night (N. Davies) and Bats (G. Gibbons) are great batty books for young readers. 
  
Is it a bird or a bat? 
Find out by throwing something soft (like a flexible frisbee or a soft ball) into the air when you see something bat-like flying nearby.  If it is a bat, it will dive at the object, using echolocation to find out if it is food!


The Organization for Bat Conservation maintains a great website, including a section devoted to children:  www.batconservation.org


Visit the Ohio Department of Natural Resources A-Z species guide, to learn about the 13 different species of bats that share our backyard in Ohio!


If you live in the Cincinnati area, the Cincinnati Zoo and the Cincinnati Museum of Natural History and Science both have bat habitats where you can see species beyond those indigenous to the area. 


Sid the Science Kid  also has a nice piece about bats!

Bats are great neighbors; they can eat 2,000-6,000 insects a night...
just think about how many fewer bug bites that means!


If you were going to eat 2,000- 6,000 of something, what would it be? 


Many bat species are threatened or endanged,
find out how you can help by building a bat house!

Tuesday, August 16, 2011

Lighting up Summer Nights with Bioluminescence: Chasing fireflies for science!

True symbols of summer nighttime fun, fireflies (or lightning bugs) give children one more reason to stay up just a little bit longer before going to bed.  Other than their obvious charm, lightning bugs can be used as a simple illustration of a complicated-sounding phenomenon:  chemiluminescence.

Chemiluminescence is the production of light as a result of a chemical reaction.  When this light occurs in a living creature, the term used is bioluminescence (or living light).  Fireflies are a great example to be seen on land (air), while many creatures who use chemicals to create light are found in the sea (remember Marlin and Dory with the anglerfish in Finding Nemo?) When they take oxygen into their bodies, the reaction begins...


Children can imitate fireflies, playing 'Firefly Tag,' with a great counting twist:  http://familyfun.go.com/playtime/flashlight-game-firefly-708235/.  To make it a bit more realistic, you can have participants come up with their own unique flash pattern, like those used by fireflies to communicate.


Another tasty illustration of luminescence (this time triboluminescence, light coming from the breaking of chemical bonds) uses Wint-o-Green Lifesaver candies.  Pass out a piece of candy to each participant, find a very dark place, and chew with your mouth open, watching a partner's mouth at the same time! The drier the mouth, the better the blue sparks! (Read a thorough explanation here:  http://chemistry.about.com/cs/howthingswork/a/aa060601a.htm)

If you love fireflies and want to know more, this is a great site to visit: http://www.firefly.org/
Stories that will light up your imagination:  The Very Lonely Firefly (Eric Carle) & Sam and the Firefly (P.D. Eastman)
Play a flashy firefly game with PBSkids' Wild Kratts:  http://pbskids.org/wildkratts/games/firefly-flash/
Official firefly themesong? http://www.youtube.com/watch?v=psuRGfAaju4&feature=artistob&playnext=1&list=TLR6ztTHp6kSI

What if you lit up with a single breath?  
What kind of messages would you send?