Monarchs Cluster News Today

Of five or ten. >> reporter: researcher richard brockman is also on the green counting monarch butterflies just hanging out behind the ninth hole. >> here we have a few hundred clustering close together. theyre pine cones or dead leaves, looks like. most people would never see them. >> reporter: an estimated 200,000 my grating western monarchs are spending the winter in california. last year only 2,000 were spotted and thought to be on the verge of extinction. >> some of the biggest factors impa...