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caliginosus Bombus f 43.974, -123.114

Many males and females around. She was leaving her nest.

Totally covered in mites.

was taken down by another bee and stunned for a bit

Saw only two Bombus. This one seems to be nectaring, as her corbicula are full of orange pollen. The only flowers with orange pollen on this bank were mullein.

On cultivated Cotoneaster near ocean shoreline

There are dozens of these in my garden.

On cultivated spirea.

Visiting what I think is cultivated spirea.

Visiting cultivated spirea

Female gathering plant fibers. Video at: https://youtu.be/wpMiFwsufeA

Melecta on Ribes aureum

foraging on Hoary Aster

foraging on Symphoricarpos albus - Snowberry

This ID assumes yellow band is on T3, if on T4 then B vandykei does not fit. This bee does have yellow hairs on posterior sternal segments but yellow on scutellum does not fit with B caliginosus.

B appositus nest. The nest was very active with many bumble bees entering and lleaving, it also had a continuous load buzzing sound with bees inside cooling the nest on this hot day.

Nest - different B huntii bees

Female

on Coreopsis tinctoria (Columbia tickseed)

On Liatris pycnostachya. Thought it was remigatus, but discoverlife says curved S5 and no distinct lines of pale hairs on thorax means concavus

On native lupine.

Is this Anthophora crotchii -female? Looks nothing like the male!