The "cloud effect" is another beautiful butterfly
behavior. This occurs in the colony when the sun goes behind a cloud.
It is especially pronounced after a long morning of sunshine, when the
sun has heated the forest and the colony. In this picture, taken from
a helicopter by Dr. Lincoln Brower, a cloud has just blocked the sun.
Basically what occurs is as follows: Try This! Journaling Questions What purpose do you think is served by the behavior known as the "cloud effect"? That is, why do you think the butterflies suddenly fly into the air the moment the sun goes behind a cloud? What are they trying to do?
National Science Education Standards Science as Inquiry Scientists develop explanations using observations (evidence) and what they already know about the world. Good explanations are based on evidence from investigations. (K-4) Life Science Behavior is one kind of response an organism can make to an internal or environmental stimulus. Behavioral response is determined in part by heredity and in part from experience. (5-8) |