Richard Du Toit / Cape White-eye (Zosterops capensis) on Cape Honeysuckle (Tecomaria capensis), Garden Route National Park, South Africa

Heather Angel / Bumblebee nectaring on Indian bean tree (Catalpa bignonioides) flower, pollen on back. Surrey, England, UK. August.

Heather Angel / Bumblebee (Bombus sp) nectaring on Indian bean tree (Catalapa bignoniodes) flower. Pollen on bee's back transferring to stigma. In garden, Surrey, England, UK. July.

Heather Angel / Southern catalpa (Catalpa bignonioides) flowers. Recently opened with yellow nectar guides, purple in older pollinated flowers. Surrey, England, UK. Native to USA.

Heather Angel / Incarvillea (Incarvillea compacta) with raindrops on petals. Near Zhedou Shan Pass, Sichuan Province, China.

Lucas Bustamante / Araguaney / Yellow Ipe / Guayacan tree (Tabebuia chrysantha) flowers, Mangahurco, Loja, southern Ecuador

Lucas Bustamante / Araguaney / Yellow Ipe / Guayacan tree (Tabebuia chrysantha) blooming, Mangahurco, Loja, southern Ecuador

Lucas Bustamante / Araguaney / Yellow Ipe / Guayacan tree (Tabebuia chrysantha) blooming, Mangahurco, Loja, southern Ecuador

Neil Aldridge / Sausage tree (Kigelia africana) in the Okavango Delta, Botswana. Historically, the Black rhino has been one of the main seed dispersal agents of the sausage tree in the Okavango Delta and conservation...

Neil Aldridge / Sausage tree (Kigelia africana) showing its large hanging fruits in the Okavango Delta, Botswana. Historically, the Black rhino has been one of the main seed dispersal agents of the sausage tree in th...

Neil Aldridge / Giant fruit of the sausage tree (Kigelia africana) lies on the ground underneath its parent tree in the Okavango Delta, Botswana. Historically, the Black rhino has been one of the main seed dispersal...

Neil Aldridge / Sausage tree (Kigelia africana) in the Okavango Delta, Botswana. Historically, the Black rhino has been one of the main seed dispersal agents of the sausage tree in the Okavango Delta and conservation...