
White-winged dove (Zenaida asiatica). Desert Botanical Garden, Phoenix, Arizona.

White-winged dove (Zenaida asiatica). Desert Botanical Garden, Phoenix, Arizona.

Lesser goldfinch (Spinus psaltria), at the Desert Botanical Garden, Phoenix, Arizona.

Lesser goldfinch (Spinus psaltria), at the Desert Botanical Garden, Phoenix, Arizona.

Cactus flower.
Saguaro (Carnegiea gigantea), at the Desert Botanical Garden, Phoenix, Arizona.

Cactus flower.
Saguaro (Carnegiea gigantea), at the Desert Botanical Garden, Phoenix, Arizona.

Round-tailed ground squirrel (Xerospermophilus tereticaudus) foraging desert ironwood blossoms (Olneya tesota). At the Desert Botanical Garden, Phoenix, Arizona.

Round-tailed ground squirrel (Xerospermophilus tereticaudus) foraging desert ironwood blossoms (Olneya tesota). At the Desert Botanical Garden, Phoenix, Arizona.

Bird on a briar.
Anna’s hummingbird (Calypte anna, adult female or immature male) with its face dusted with pollen. At the Desert Botanical Garden in Phoenix, Arizona.

Bird on a briar.
Anna’s hummingbird (Calypte anna, adult female or immature male) with its face dusted with pollen. At the Desert Botanical Garden in Phoenix, Arizona.

Cane cholla blossoms (Cylindropuntia spinosior), at the Desert Botanical Garden, Phoenix, Arizona.