Bank Swallow (or Sand Martin)

It's spring, and once again we have a pair of Bank Swallows in the parking lot behind our school admin building.
At first I thought it was too small, but they must be nesting in this pipe.

1/1250 F/7.1 300mm ISO400 -1.0 EV

--Joe
Canon 20D, T2i, 100-400L IS, EF-S 18-55mm IS, EF-S 55-250mm IS, EF 50 f/1.8 II
Nikon D500, D7200, 18-55mm VR II, 55-200mm VR II, AF-P Nikkor 18-300 DX G ED VR, NIkkor AF-S 200-500mm f/5.6E ED VR
-- https://www.flickr.com​/photos/155078134@N02/

Mitch- ____...^.^...____
Gear List, My You Tube
War is not about who's right, it's about who's left.

--Joe
Canon 20D, T2i, 100-400L IS, EF-S 18-55mm IS, EF-S 55-250mm IS, EF 50 f/1.8 II
Nikon D500, D7200, 18-55mm VR II, 55-200mm VR II, AF-P Nikkor 18-300 DX G ED VR, NIkkor AF-S 200-500mm f/5.6E ED VR
-- https://www.flickr.com​/photos/155078134@N02/