Pete Oxford / Palo Santo (Bursera graveolens) trees growing in arid landscape, Tagus Cove, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Red-footed booby (Sula sula) nesting in dry palo santo (Bursera graveolens). Prince Phillip's Steps, Genovesa (Tower) Island, Galapagos, June.

Murray Cooper / Palo Santo (Bursera graveolens) trees along coast, Rabida Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) tree growing in the arid zone of Santiago Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) trees growing in the arid zone of Santiago Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) trees, Santiago Island, Galapagos Islands, Ecuador

Pete Oxford / Manzanillo (Hippomane mancinella) and Palo Santo (Bursera graveolens) trees growing on cool lava field, Santiago Island, Galapagos Islands, Ecuador

Tim Laman / Aerial view of Palo santo trees (Bursera graveolens) growing on the slopes of a volcano at Puerto Egas, Santiago Island, Galapagos Islands. Nov 2007.

Tim Laman / Aerial view of Palo Santo trees (Bursera graveolans) on Isabala Island, Galapagos. June 1993.

Tui De Roy / Palo Santo (Bursera graveolens) forest bisected by young lava flow, Pinta Island, Galapagos Islands, Ecuador

Pete Oxford / Aerial view of Palo santo trees (Bursera galapageia) growing in the arid zone of Tagus Cove, Isabela Island around the circular crater of Darwin's Lake, Galapagos

Pete Oxford / Palo santo trees (Bursera galapageia) and cinder cone in the arid zone of Tagus Cove, Isabela Island, Galapagos

Pete Oxford / The Baroness observatory on top of hill with Palo santo trees (Bursera galapageia) growing on arid hillside, Floreana Island. Galapagos Islands, 2006

Pete Oxford / Arid coastline with Palo santo trees (Bursera galapageia) Floreana Island, Galapagos Islands, 2006

Pete Oxford / Palo santo trees (Bursera galapageia) growing in the arid zone of Tagus Cove of Isabela Island. Galapagos Islands

Pete Oxford / Arid coastline with Palo santo trees (Bursera galapageia) Floreana Island, Galapagos Islands, 2006

Pete Oxford / Palo santo trees (Bursera galapageia) Floreana Island, Galapagos Islands, South America

Pete Oxford / Palo Santo (Bursera graveolens) tree ringed bay with tourists, Floreana Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) trees and Mangroves (Avicennia sp) in bay surround cinder cone, Floreana Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) trees growing in arid landscape, Floreana Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) trees growing in arid landscape, Floreana Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) trees growing in rugged, arid landscape, Floreana Island, Galapagos Islands, Ecuador

Tui De Roy / Red-footed Booby (Sula sula) perching in Palo Santo Tree (Bursera graveolens) nest site, Genovesa Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo trees {Bursera graveolens} Machalilla NP. Pacific Coastal Dry Forest,

Mark Moffett / Palo Santo (Bursera graveolens) trees along coastline, Floreana Islands, Galapagos Islands, Ecuador

Tui De Roy / Red-footed Booby (Sula sula) brown morph in Palo Santo tree, Genovesa Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Swift river of lava flows past old stand of trees on previously vegetated cone, Fernandina Island, Galapagos Islands, Ecuador

Pete Oxford / Palo santo trees {Bursera graveolens} Tagus Cove, Isabela Island, Galapagos Is.

Jami Tarris / Palo Santo (Triplaris sp) trees reflected in water, Tagus Cove, Isabela Island, Galapagos Islands, Ecuador

Pete Oxford / Palo Santo (Bursera graveolens) trees growing in arid landscape, Tagus Cove, Isabela Island, Galapagos Islands, Ecuador

Murray Cooper / Palo Santo (Triplaris cumingiana) tree flowering, Choco Rainforest, Ecuador

Tui De Roy / Volcanic eruption February 1995 a swift river of lava runs past old stand of trees on previously vegetated cone, Fernandina Island, Galapagos Islands, Ecuador

Mark Moffett / Ant (Pseudomyrmex sp) biologist Doug Yu plucks ants from Palo Santo (Triplaris sp) tree whose base cleared of vegetation by the ants, Peru

Tui De Roy / Darwin's large tree finch (Camarhynchus psittacula) hunting for wood-boring insects by cracking and peeling dead Palo Santo tree (Bursera graveolens) branches with strong parrot-like bill, Santa...

Tui De Roy / Darwin's large tree finch (Camarhynchus psittacula) breeding adult (black beak), hunting for wood-boring insects by cracking and peeling dead Palo Santo tree (Bursera graveolens) branches with st...

Tui De Roy / Darwin's large tree finch (Camarhynchus psittacula) breeding adult (black beak), hunting for wood-boring insects by cracking and peeling dead Palo Santo tree (Bursera graveolens) branches with st...

Tui De Roy / Darwin's large tree finch (Camarhynchus psittacula) breeding adult (black beak), hunting for wood-boring insects by cracking and peeling dead Palo Santo tree (Bursera graveolens) branches with st...

Tui De Roy / Darwin's large tree finch (Camarhynchus psittacula) breeding adult (black beak), hunting for wood-boring insects by cracking and peeling dead Palo Santo tree (Bursera graveolens) branches with st...

Tui De Roy / Darwin's large tree finch (Camarhynchus psittacula) breeding adult (black beak), hunting for wood-boring insects by cracking and peeling dead Palo Santo tree (Bursera graveolens) branches with st...

Tui De Roy / Red-footed booby (Sula sula) perched on Palo santo tree (Bursera graveolens), with flowering Yellow cordia (Cordia lutea) in background. Galapagos Islands, Ecuador.

Tui De Roy / Arid vegetation dominated by Palo santo trees (Bursera graveolens), Floreana Island, Galapagos, South America. July, 2019.

Tui De Roy / Palo santo trees (Bursera graveolens), Santiago Island, Galapagos, South America.