evolution

653

Like most snails, most Banded Tulip shells have a right handed spiral. With the opening facing you, and the point up, the shell spirals to your right. A few, lucky snails in most species spiral to the left. Why does that make them lucky?

884

Bat
Nancy found this injured bat on the road to our house. We rescued it, and took it to the wildlife rehab center at Best Friends. You have probably heard the old saying that someone is "blind as a bat." How well do bats actually see?

886

Bristle
I took this photo through the microscope today. This is an important part of an animal's defense. What is it?

887

Rufous Hummingbird
I took this photo of a female Rufous Hummingbird at our bird feeder today. Why are hummingbird feeders red?

889

Pollen
This is another photo I took through the microscope. It is a grain of pollen. Why does it have all the tiny spines?

893

Cabbage
This cabbage from our friends garden has leaves similar to the broccoli that I am growing. How closely related are they?

895

Bullock's Oriole
We have quite a few of these birds visiting our garden. They are specially adapted for avoiding a specific parasite. What is the bird, and how does it avoid the parasite?

903

Hummingbirds at feeder
Every evening, just before sunset, the hummingbirds swarm around our feeders. Why do they suddenly get hungry at sunset?

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