In March, the rusty patched bumble bee was listed as an endangered species.One of the places this species is still found is right here in Madison. A visiting bee expert from California found a rusty patched bumble bee at the UW Arboretum in 2010, says Susan Carpenter, a native plant gardener there. Now the organization has a group of volunteers keeping an eye out for this species, as well as the 11 other bumble bee species found on the 1,200 acres.
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