David Perpinan / Close up shot of Solitary bee (Anthophora fulvitarsis) in burrow, Barcelona, Spain, May.
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John Waters / Mason bees (Osmia bicornis) using a solitary bee hotel, Bristol, UK, April.
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John Waters / Mason bee (Osmia bicornis) entering and exiting cardboard tube in bee hotel, Bristol, UK, April.
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John Waters / Mason bee (Osmia bicornis) packing mud into opening of cardboard tube to seal nest in bee hotel, Bristol, UK, April.
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John Waters / Mason bees (Osmia bicornis) entering and exiting cardboard nest tubes in bee hotel with pollen, Bristol, UK, April.
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John Waters / Close up of female Leafcutter bee (Megachile centuncularis) placing a leaf in it's nest entrance, Bristol, UK, July.
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John Waters / Close up of female Leafcutter bee (Megachile centuncularis) returning to nest with a leaf before placing it at the entrance, Bristol, UK, July.
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John Waters / Close up of female Leafcutter bee (Megachile centuncularis) placing a leaf in it's nest entrance, Bristol, UK, July.
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Nick Upton / Female Willoughby's leafcutter bee (Megachile willughbiella) exiting her nest in an insect hotel, Wiltshire, England, UK, July.
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Nick Upton / Female Willoughby's leafcutter bee (Megachile willughbiella) sealing its nest in an insect hotel with a leaf, Wiltshire, England, UK, July.
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Nick Upton / Female Willoughby's leafcutter bee (Megachile willughbiella) flying to its nest in an insect hotel, carrying a piece of leaf, Wiltshire, England, UK, July.
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Nick Upton / Female Willoughby's leafcutter bee (Megachile willughbiella) flying to its nest in an insect hotel, carrying a piece of leaf, Wiltshire, England, UK, July.
