Republic of Ireland, County Sligo, Ben Bulben mountain seen from Lukes Bridge area with rhododendrons in the foreground.

Republic of Ireland, County Sligo, Ben Bulben mountain seen from Lukes Bridge area with rhododendrons in the foreground.

Ireland, County Sligo, Gortarowey, Ben Bulben mountain with rhododendrons in the foreground.

Ireland, County Sligo, Gortarowey, Ben Bulben mountain with rhododendrons in the foreground.

Ireland, County Sligo, Gortarowey, Ben Bulben mountain with rhododendrons in the foreground.

Zebra Longwing or Zebra Heliconia Butterfly, (Heliconius charitonia), feeding on a flower near Panajachel, Guatemala

Three Mexican Silverspot Butterflies, Dione moneta poeyii, on a plant in the Atitlan Nature Reserve near Panajachel, Guatemala.

Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, approaches a tropical flower of the Kohleria genus of the Gesneriaceae or African Violet family, to feed, and in the process, pollin...

Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, approaches a tropical blueberry flower to feed, and in the process, pollinates the flowers as it flies from one to the next. Costa R...

Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, feeds on the nector of a tropical Hairy Heliconia flower, Heliconia vellerigera, and in the process, pollinates the flowers as it fl...

Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, warns off a Coppery-headed Emerald Hummingbird, Elvira cupreiceps, attempting to feed on a hairy heliconia flower, Heliconia velleri...

Animals, Birds, A Black-bellied Hummingbird, Euperusa nigriventris, feeds on the nector of a tropical flower of the Kohleria genus of the Gesneriaceae or African Violet family, and in the process, pol...