Nick Upton / Large number of male Ivy bees (Colletes hederae) flying over a grassy bank, searching for newly emerged females to mate with, Wiltshire, England, UK, September.
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Nick Upton / Pair of mating Ivy bees (Colletes hederae) struggling to climb grass stems as many other males compete to mate, Wiltshire, England, UK, September.
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Nick Upton / Ivy bee (Colletes hederae) grooming and emerging from its burrow, Wiltshire, England, UK, September.
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Nick Upton / Ivy bee (Colletes hederae) mating ball, showing a mass of males clustered around a female recently emerged from her burrow, Wiltshire, England, UK, September.
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Nick Upton / Ivy bee (Colletes hederae) feeding on Ivy flowers (Hedera helix) as another flies in, Wiltshire garden, UK, September.
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Nick Upton / Ivy bee (Colletes hederae) males competing to mate with a female soon after her emergence from a burrow in a grassy bank, with another flying over the mating ball, Wiltshire, UK, September.
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Nick Upton / Ivy bee (Colletes hederae) male in flight patrolling above a grassy bank seeking newly emerged females to mate with, Wiltshire, UK, September.
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Nick Upton / Ivy bee (Colletes hederae) males patrolling above a grassy slope where females are emerging from burrows during the autumn mating season, Wiltshire, UK, September.
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Nick Upton / Ivy bee (Colletes hederae) female emerging from burrow during the autumn emergence and mating season, Wiltshire garden, UK, September.
