Bumblebee

Bumblebee

Observation - Bumblebee. Description: This one was found resting on a trellis in the garden but two others were noted on nearby flowers. It was basically black with a buff tail and yellow collar.There is also a line of grey hair around the thorax and abdomen. I can't see anything that matches

This one was found resting on a trellis in the garden but two others were noted on nearby flowers. It was basically black with a buff tail and yellow collar.There is also a line of grey hair around the thorax and abdomen. I can't see anything that matches the buff tail or the grey hair. Help with ID would be appreciated.