Andy Rouse / RF - Rose-ringed parakeet (Psittacula krameri) taking off. Ranthambhore National Park, India. (This image may be licensed either as rights managed or royalty free.)
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Steven David Miller / Noisy pitta (Pitta versicolor) standing on rock. In aviary, Cairns, Queensland, Australia. Captive.
Heather Angel / Rock jasmine (Androsace sericea) flowers. Colour of corona ring indicates age and nectar content of flower. Mountains of Heaven / Tian Shan, Kazakhstan. June.
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Heather Angel / Winter aconite (Eranthis hyemalis) flower and bud. Ring of nectaries formed from petals. In garden, Surrey, England, UK. February.
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Heather Angel / Love-in-a-mist (Nigella damascena) stamens fluroescing in UV light. Ring of nectaries are dark red with blue UV reflective hairs.
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Heather Angel / Christmas rose (Helleborus niger) flower, pollen on dehisced anthers and on petals fluorescing in UV light. Nectar ring appearing red. Focus stacked.
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Heather Angel / Winter aconite (Eranthis hyemalis) with ring of nectaries below stamens. Focus stacked.
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Staffan Widstrand / Rose-ringed parakeet (Psittacula krameri) Keoladeo Ghana National Park, Bharatpur, Rajasthan, India
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Lucas Bustamante / Rose-ringed parakeet (Psittacula krameri) Yala National Park, Southern Province, Sri Lanka
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Bernard Castelein / Rose-ringed parakeet (Psittacula krameri), eating wild fruit, Keoladeo NP, Bharatpur, India
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Steven David Miller / Red-capped Robin (Petroica goodenovii), a banded male, Alice Springs Desert Park, Northern Territory, Australia. May. Captive.
