Category: Biology (Page 28 of 40)

Weekend Science Fun: Exploring Elephants

Our science activities have been inspired by a children’s book yet again. This time we’ve been reading Beco’s Big Year:  A Baby Elephant Turns One by Linda Stanek.

Beco is a baby elephant that was born recently at the Columbus Zoo and Aquarium. The book is full of information, not only about absolutely adorable Beco, but also about elephants in general. For reviews see Beco’s Big Year at Simply Science and my review at Wrapped In Foil.

1. Activity:  African versus Asian Elephants – Identification

Did you know that there are three different species of elephants in the world today? The three species are African elephants (Loxodonta africana), African forest elephants (Loxodonta cyclotis) and Asian elephants (Elephas maximus).

African elephants have:

  • large floppy ears
  • two pointed areas at the end of the trunk
  • the forehead is flat
  • both males and females have tusks

Here’s a photograph my husband took when he was in Africa.

Here’s a photograph from Wikimedia that shows the big ears.

In contrast, Asian elephants have

  • small ears that don’t reach past their jaws
  • one pointed area at the end of the trunk
  • two large bumps on their foreheads
  • only males have full tusks

Let’s take a look at Asian elephants:

See how much smaller the ears are? (Photograph is also from Wikimedia.)

This is a photograph of Beco. Which species is he?

The photograph was taken by Shell Kinney, who kindly uploaded it to Wikmedia.

Activity 2. “Elephant angels”

Do you see the dusty debris on Beco’s back? That is a common behavior. It is easy to find pictures of elephants throwing dirt, wood chips, hay or straw onto their backs.

Author of the book explains about how when the elephants lay down at night, the keepers can tell where they’ve been based on the piles of debris that come off around them. The keepers call the piles “elephant angels” because they look like the snow angels children make in the snow.

Why do elephants “decorate” themselves? Two common ideas are that the dirt and hay keeps off flies or other parasites, and also that it helps keep the intense sun off their skin. Another suggestion is that it helps them keep warm when it is cold, which would make sense in Columbus, Ohio.

Gather:

  • coloring sheet of an elephant and print it out (Enchanted Learning has some).
  • card stock or manila folder
  • glue
  • scissors
  • paper
  • tape (optional)
  • crayons, chalk or blo pens

Print out the elephant image. Glue it to card stock or an old manila folder. Cut out the outline of the elephant, which forms what is basically a reverse stencil. Lightly tape the stencil on a piece of paper, or hold it firmly in place. Color the area around the stencil. Remove the stencil to reveal the “Elephant angel.”

Use your imagination to come up with other creative ways to get a reverse or “negative” elephant image. Let us know what you come up with.

Activity 3. Behavioral Enrichment

Behavioral enrichment is a way of helping improve the quality of life of animals in captivity by supplying them with items or space to incorporate behaviors commonly found in nature. The elephant handlers are always looking for ideas to make life more interesting for the elephants. For example, they gave Beco a giant blue rubber ball to play with.

In this video Beco is playing with a block of ice shaped like a birthday cake that the handlers gave him for his first birthday. The blocks of ice offer something new for Beco to investigate.

At our zoo in Phoenix, Arizona we used to have an elephant who painted pictures, holding the brush with her trunk. The elephant’s name was Ruby.

One of Ruby’s paintings from Wikipedia.

Can you think of ways to give an elephant behavioral enrichment? Write down your ideas and then research what other zoos have done to keep their elephants active and interested.

Further Resources:

The Elephant Sanctuary has two downloadable curricula. (You will probably want to pick and chose the lessons.)

Elephant Anatomy has clickable photographs with labels

Beco’s Big Year: A Baby Elephant Turns One
by Linda Stanek
Reading level: Ages 4-8
Paperback: 48 pages
Publisher: Columbus Zoo and Aquarium (August 2010)
ISBN-10: 0984155430
ISBN-13: 978-0984155439

(Affiliate link to Amazon)

A huge, elephant-sized thank you to Shirley at Simply Science for sharing the book.

More books about elephants:

Raising Snails and Science Projects

In answer to a question that came in this week about raising snails, I have put together a few resources for you.

snail

We raised brown garden snails, which are a commonly considered to be a pest species. We kept them in gallon-sized jars (sun tea jars work well) with a fabric (light cotton) cover. The cover was simply held on with a rubber band. We tried moist soil in one container and wet paper towels in the other. The paper towels were easier to clean and the snails sometimes used the towels for food. We were vigilant to keep the towels moist.

The soil was more of an issue, because we soon had an overgrowth of springtails and sowbugs that we had accidentally added with our garden soil. The soil was also harder to keep free of rotting vegetable matter. (Hence the extra critters). Snails need to be cleaned frequently.

You will need to add sources of calcium, like egg shells. We gave the snails egg shells that we washed out. We also gave them a number of different leafy vegetables.

The snails laid their eggs in the paper towels or under the soil. In no time we had a lot of snails (you probably should have an “exit plan” such as friends that are willing to take some off your hands). Taking care of snails and watching their life cycle was a great way to learn about a creature so different from our fuzzy pet friends.

The book Snailology by Michael Elsohn Ross, Darren Erickson (Illustrator), and Brian Grogan (Illustrator, Photographer) is also a wonderful resource.

To learn more try:

Anatomy of Snails has labeled photographs of snails parts

Kiddyhouse has worksheets for the younger set, including a diagram to label and a garden scene with snails to color.

Science Buddies has Can Copper Foil Snails?

Great Backyard Bird Count 2011

Did any of you take part in the Great Backyard Bird Count this year? What did you see?

My son counted:
Mourning Dove – 8
Inca Dove – 1
Anna’s Hummingbird – 2
Black Phoebe – 1

What was a very noticeable change from his count last year was a lack of house sparrows and house finches. It could have been the time of the day he counted, and the fact it was cold and rainy.

We weren’t worried about house sparrows, because we still see them all the time. Here’s one from the park the other day:

But we had already noticed fewer house finches in our yard, even though we were feeding the same kinds of seeds in the same kind of feeder. Checking the previous count totals for our city in previous years we see 138 house finches were counted in 2009, 102 in 2010 and now only 31 so far this year. House finches are native to the Southwest, so we checked to see if the trend carried throughout the state. Sure enough 7,978 house finches were counted in 2009, 7,132 in 2010 and only 3,821 in 2011 (not all reports made yet).

(Photo from 2009).

The Black Phoebe is an interesting new addition, although I noticed this morning that the male Anna’s hummingbirds are giving it trouble so I don’t know whether it will stay.

What birds did you count this year? Do you have house finches?

Did you search through the counts from previous years?

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