jordan_kue 的鑑定

Family guess is a iNat suggestion. Thanks for ID help! Hundreds, if not a thousand, individuals flying over the ground and digging on embankment of patchy grass on golf course. Holes the size of a pencil diameter. Bees the size of pointer fingernail.

I have observed nest holes in this area for several years. I cannot post videos here, so have loaded three short ones of a bee at its nest hole and general view of the communal nesting on my You-tube channel.

Short video of bee over nest site: https://youtu.be/MBQ6wcsASYY

Long video of bee over nest site: https://youtu.be/2U1prHigDWA

View of communal ground nesting site: https://youtu.be/dOQnmJ1ieq4

This is an update for observation https://www.inaturalist.org/observations/71833402
Bee photographs taken by AE Hass, with permission given to post on my observation. https://www.inaturalist.org/people/edhass

Individual bees photographed at the aggregation will be listed in separate observations. Location and nest hole photographs will be repeated across the observations because two different diameter holes were observed. Note the difference in clay color. Without looking at the prior observation notes, we felt the aggregation numbered approximately 1000 nests. A map with dimensions of the site is included. The slope faces south / southwest.

This is an update for observation https://www.inaturalist.org/observations/71833402
Bee photographs taken by AE Hass, with permission given to post on my observation. https://www.inaturalist.org/people/edhass

Individual bees photographed at the aggregation will be listed in separate observations. Location and nest hole photographs will be repeated across the observations because two different diameter holes were observed. Note the difference in clay color. Without looking at the prior observation notes, we felt the aggregation numbered approximately 1000 nests. A map with dimensions of the site is included. The slope faces south / southwest.

Bee photograph taken by AE Hass, with permission given to post on my observation. https://www.inaturalist.org/people/edhass

Individual bees photographed at the aggregation will be listed in separate observations. Location and nest hole photographs will be repeated across the observations. We felt the aggregation numbered approximately 3000 nests. A map with dimensions of the site is included. Many of the nests are beneath mature oak trees but the edge of hillside slopes west / southwest.

Bee photograph taken by AE Hass, with permission given to post on my observation. https://www.inaturalist.org/people/edhass

Individual bees photographed at the aggregation will be listed in separate observations. Location and nest hole photographs will be repeated across the observations. We felt the aggregation numbered approximately 3000 nests. A map with dimensions of the site is included. Many of the nests are beneath mature oak trees but the edge of hillside slopes west / southwest.

Bee photograph taken by AE Hass, with permission given to post on my observation. https://www.inaturalist.org/people/edhass

Individual bees photographed at the aggregation will be listed in separate observations. Location and nest hole photographs will be repeated across the observations. We felt the aggregation numbered approximately 3000 nests. A map with dimensions of the site is included. Many of the nests are beneath mature oak trees but the edge of hillside slopes west / southwest.

Bee photograph taken by AE Hass, with permission given to post on my observation. https://www.inaturalist.org/people/edhass

Individual bees photographed at the aggregation will be listed in separate observations. Location and nest hole photographs will be repeated across the observations. We felt the aggregation numbered approximately 3000 nests. A map with dimensions of the site is included. Many of the nests are beneath mature oak trees but the edge of hillside slopes west / southwest.

Bee photograph taken by me.

Individual bees photographed at the aggregation will be listed in separate observations. Location and nest hole photographs will be repeated across the observations. We felt the aggregation numbered approximately 3000 nests. A map with dimensions of the site is included. Many of the nests are beneath mature oak trees but the edge of hillside slopes west / southwest.