As the Audubon Society has clarified about Birbs, Borbs, and Floofs, Borbs are fat Birbs. This is a Purple Sandpiper on the left, looking like a fat, chocolate covered cake pop. On the right, a Borbish Ruddy Turnstone. I took this photograph on Huguenot Memorial Beach near Jacksonville, FL in February 2019 with my Nikon D5, 500mm PF lens, and Nikon TC 14 Eiii.