Diane McAllister / Four newly-hatched Western scrub jay chicks (Aphelocoma coerulescens) sleeping in their nest with one unopened and silent egg. The nest is in a backyard in Reno. Nevada, USA, June
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Nick Upton / Honey bee (Apis mellifera) with heavily laden pollen sacs inspecting unopened Ivy flower buds (Hedera helix), Wiltshire garden, UK, September
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Chien Lee / Giant pitcher plant (Nepenthes rajah) unopened pitcher, Kinabalu National Park, Borneo, Malaysia
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Nick Garbutt / Rafflesia flower (Rafflesia keithii) (about 3 days) with unopened buds. Lower slopes of Mt Kinabalu, near Poring Hot Springs, Kinabalu NP, Sabah, Borneo, Malaysia
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Nick Garbutt / RF- Rafflesia flower (Rafflesia keithii) (about 3 days) with unopened buds. Lower slopes of Mount Kinabalu, near Poring Hot Springs, Kinabalu National Park, Sabah, Borneo, Malaysia. (This image may be...
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Duncan Mcewan / Unopened male inflorescences on Noble fir tree {Abies procera} April, Scotland
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Adrian Davies / Dog stinkhorn fungus and unopened 'eggs' of fungus. {Mutinus caninus} UK.
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Jane Burton / Carrion flower (Stapelia variegata) flower and unopened bud