Rock bunting (cinnamon-breasted bunting) (Emberiza tahapisi), Mountain Zebra National Park, South Africa, Africa

Corn Bunting (Miliaria calandra) standing on rock singing, Bulgaria

Corn Bunting (Miliaria calandra) standing on rock singing, Bulgaria

Men work at a limestone quarry, near Matanzas, Cuba.

The outline of a snorkeler is seen through bubbles and turbulent currents underwater as waves break onto rocks and reef off Utila Island, Honduras.

Bruce M. snorkels at the surface of the water off Roatan Island, Honduras.

Bruce M. snorkels at the surface of the water off Roatan Island, Honduras.

Men work at a limestone cooperative quarry, just outside the city of Matanzas, Cuba. The stone is cut with long-toothed handsaws, and carried through the quarry to a waiting truck.

Men work at a limestone quarry, near Matanzas, Cuba.

Three woman in costume for procession of Sant 'Efisio in Sardinia, Italy