Equipment used for science field work on a green background. Equipment includes an NPS Ranger shirt, hat, sunglasses, boot, binoculars, radio, field guides and knife.

Cabrillo Field Notes – Sonoran bumblebee

One can usually spot a bumblebee when they see one because of their large size. One of the largest of the Bombus species in San Diego County is the Sonoran bumblebee (Bombus sonorous). This species is unlike other bumblebee species in that it is active in the late summer and fall, as opposed to being active in the spring.

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