Gerry Ellis / Cape Sugarbird (Promerops cafer) male perching on Protea flowers (Mimetes protea), Kirstenbosch Garden, South Africa

Mitsuaki Iwago / Pygmy Possum (Cercartetus sp) licking nectar from a Coastal Banksia (Banksia integrifolia), Australia

Richard Du Toit / Cape Sugarbird (Promerops cafer) male on Pincushion (Leucospermum sp), Western Cape, South Africa

Richard Du Toit / Amethyst Sunbird (Amethyst Sunbird) sub-adult male on King Protea (Protea cynaroides) flower, Western Cape, South Africa

Heather Angel / Red wattlebird (Anthochaera carunculata) feeding on nectar of flame grevillea (Grevillea excelsior) Kings Park, Western Australia Botanic garden, Western Australia.

Heather Angel / Red wattlebird (Anthochaera carunculata) nectaring on Fuschia grevillea (Grevillea bipinnatifida). Western Australia Botanic Garden, Kings Park, Perth,

Heather Angel / Southern double-collared sunbird (Cinnyris chalybeus), male nectaring on Pincushion protea (Leucospermum cordifolium). Cape, South Africa. August.

Heather Angel / Red wattlebird (Anthochaera carunculata) nectaring on Grevillea (Grevillea preissii). Western Australia Botanic Garden, Kings Park, Perth, Australia. November.

Heather Angel / Malachite sunbird (Nectarinia famosa) male perching on King protea (Protea cynaroides) whilst foraging for nectar. Pearl Mountain Reserve, South Africa, August.

Heather Angel / Malachite sunbird (Nectarinia famosa) male nectaring on King protea (Protea cynaroides). Pearl Mountain Reserve, South Africa, August.

Heather Angel / Southern double-collared sunbird (Cinnyris chalybeus), male nectaring on Pincushion protea (Leucospermum cordifolium). Kirstenbosch National Botanical Garden, Cape Town, South Africa. August.

Heather Angel / Cape sugarbird (Promerops cafer) male nectaring on Pincushion protea (Leucospermum cordifolium). Pollen transferred from anthers to bird's head. Kirstenbosch National Botanical Garden, Cape Town,...