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Dragonfly Obelisk Posture

The dragonflies are swarming my neighborhood this week.

Dragonflies are fun to watch because they often return to the same perch over and over, giving you the opportunity to observe them closely.

Watch the abdomen on this one.

It has tipped its abdomen up into what is called the “obelisk posture.”

It is possible that it saw my camera as a threat and this was a defensive move. On the other hand, it was a hot day and scientists have suggested the obelisk posture is a way dragonflies adjust their exposure to sunlight and keep from overheating.

Cool!

The Night Flower: #kidlit About Saguaros

After writing about saguaro flowers last week, I came across a lovely new children’s book about them, The Night Flower by Lara Hawthorne.

Lara Hawthorne is an illustrator so it is no surprise this book is an incredible visual treat. The first thing you notice is the stunning cover with a bold white saguaro flower standing out against the black background of night. The image above doesn’t do it justice because because many of the details are outlined with a metallic shiny gold. It has a luminescent 3-D effect. Check out the illustrations at her website.

Inside, the book starts with an informational paragraph about the saguaro cactus. From there gentle rhyming text takes the reader on a journey through one day and night in the desert. Along the way readers meet many different animals and learn about the role the saguaro plays in their lives.

You won’t want to skip the fully-illustrated back matter. Hawthorne describes the life cycle of the saguaro and names the parts of the plant. Next she asks “Did you spot…?” In a two page spread she shows the different creatures mentioned in the text, giving more information about each and challenging the reader to go back through the book to find them. She ends with a glossary of the scientific terms she used.

The Night Flower is a beautiful introduction to a unique plant and its habitat. It is perfect to accompany a unit on deserts or plants, or to prepare for a trip to Arizona. Poke around in a copy today!

Related:

See this previous post for hands-on activity suggestions related to saguaro cacti.

For more information, check out our growing list of children’s books about deserts at Science Books for Kids.

Age Range: 3 – 7 years
Publisher: Big Picture Press (March 12, 2019)
ISBN-10: 1536206164
ISBN-13: 978-1536206166

Disclosure:  This book was provided by our local library. Also, I am an affiliate with Amazon so I can provide you with cover images and links to more information about books and products. As you probably are aware, if you click through the highlighted title link and purchase a product, I will receive a very small commission, at no extra cost to you. Any proceeds help defray the costs of hosting and maintaining this website.

Come visit the STEM Friday blog each week to find more great Science, Technology, Engineering and Math books. Note: this is a new link as of 10/2018.

Bug of the Week: Challenges for Honey Bees

Life can be challenging for honey bees.

For instance, take the red bird of paradise flower.

These flowers have amazing long stamens.

See the red threadlike-structures towards the left. The bumps at the ends are the anthers that produce pollen.

Collecting that pollen from such a fragile structure can be a chore.

It requires some acrobatics, even with wings.


One honey bee is using other stamens as scaffolding of sorts.

Another tries a different approach.

It’s called the fly in and grab.

Grasp the anther.

And down it goes.

It would have been better as a video, but I saw a bunch of honey bees doing this.

It looked like a ride at an an amusement park. The stamen droops with the weight of the bee then springs up again when the bee lets go.

All in a day’s work, I guess.

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