Contributed by Dr. Karen Oberhauser
Includes:
Contributed by Dr. Karen Oberhauser
Includes
- size
- weight
- body systems
- senses
- communication
- physiology
- other characteristics
Q. How big is the monarch butterfly?
A. Monarchs have bodies that are about 10 cm wide (including their wings).
Q. How much does a monarch butterfly weigh?
A. Monarchs weigh, on average, about half a gram. This can vary from about .27 grams (a very small monarch!) to about .75 grams (a very big monarch!)
Annual Cycle of the Ruby-throated Hummingbird
Month by month, where are Ruby-throated Hummingbirds and what are they doing? Explore the annual cycle to discover how these tiny birds respond to the seasons. (Use the expand tool to view larger images and read entire captions.)
When Shimmer? When Not?
When you look at an animal, it's usually easy to tell what color it is, but hummingbirds can fool us! Sometimes the hummer's throat feathers, called the gorget, shimmers with color. But other times it looks dark.
For a long time, scientists didn't know what made the gorgets of many male hummingbirds seem to change. But now they have an idea, thanks to special microscopes that allowed them to take a closer look at the feather structures.
Contributed by Ornithologist Laura Erickson
Problems with:
- nests
- eggs
- babies
- windows and houses
- wintering robins
- other
Q. Can I move and relocate a robin's nest?