You often hear numbers cited by wildlife officials, and may wonder where they get the numbers.
Taking animal population counts can be tricky; it's not like they send back census surveys.
BioBlitz is one way of getting things done.
It's a crash butterfly population count in the Cascade-Siskiyou National Monument coming June 6th.
A couple of the people involved with BioBlitz join us with details of its workings.
