Two Black Swallowtail Chrysalis
by Cecilia Locke
(Austin, TX)
I work in a private school and we love watching swallowtail caterpillars. I always put a smooth stick and a rough stick in the cage -- if the caterpillar forms his chrysalis on the smooth stick then it will be green -- if it is on the rough stick it will be brown. This picture shows a great example of that.