Martin Willis / Victoria's Riflebird (Ptiloris victoriae) male in courtship display, Atherton Tableland, Queensland, Australia. Sequence 2 of 3

Shane P. White / Brown Sicklebill (Epimachus meyeri), Kumul Lodge, Papua New Guinea

Chien Lee / Minden / Magnificent Bird-of-paradise (Cicinnurus magnificus) male at lek, Arfak Mountains, West Papua, Indonesia

Staffan Widstrand / Wilson's bird-of-paradise (Cicinnurus respublica), Waigeo, Raja Ampat, Western Papua, Indonesian New Guinea

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) adult male on calling perch above the rainforest canopy. Tari Pass area, Southern Highlands Province, Papua New Guinea.

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) adult male on calling perch, Southern Highlands province, Papua New Guinea

Tim Laman / Black Sicklebill Bird of Paradise (Epimachus fastuosus) male feeding on fruits of Shefflera tree. New Guinea

Cyril Ruoso / Raggiana Bird-of-paradise (Paradisaea raggiana) portrait, native to Papua New Guinea

David Tipling / Tribal performers from Hagen at Sing-sing, Mount Hagen Show in Western Highlands Papua New Guinea. Headress contains Papuan Lorikeet birds and King of Saxony plumes. August 2011

Martin Willis / Victoria's Riflebird (Ptiloris victoriae) male displaying for female on vine lek, Malanda, Queensland, Australia

Chien Lee / Standardwing (Semioptera wallacii) male displaying at lek, Halmahera Island, North Maluku, Indonesia

Konrad Wothe / Magnificent riflebird (Ptiloris magnificus) male perched in rainforest, Iron Range National Park, Cape York Peninsula, North Queensland, Australia, November

Alex Hyde / Meadow saxifrage (Saxifraga granulata), Peak District National Park, Derbyshire, UK. May.

Nick Upton / Meadow saxifrage (Saxifraga granulata) clump flowering on chalk grassland slope, Barbury Castle Iron Age Fort ramparts, Marlborough Downs, Wiltshire, UK, June.

Nick Upton / Meadow saxifrage (Saxifraga granulata) clump flowering on chalk grassland slope, Barbury Castle, Marlborough Downs, Wiltshire, UK, June.

Linda Pitkin / Meadow saxifrage (Saxifraga granulata) growing next to gravestone, All Saints' Churchyard, Sanderstead, Surrey, England, UK. May.

Linda Pitkin / Meadow saxifrage (Saxifraga granulata), a rare/ scarce plant in Surrey, and Germander Speedwell (Veronica chamaedrys) in a churchyard, Sanderstead, Surrey, England, May.

Linda Pitkin / Meadow Saxifrage (Saxifraga granulata), in a churchyard. A rare/ scarce plant in Surrey. Sanderstead, Surrey, England, May 2013.

Linda Pitkin / Meadow Saxifrage (Saxifraga granulata), in a churchyard. A rare/ scarce plant in Surrey. Sanderstead, Surrey, England, May 2016.

Nick Upton / Meadow saxifrage (Saxifraga granulata) clump flowering on a chalk grassland slope, The Ridgeway, Marlborough Downs, Wiltshire, UK, April.

Linda Pitkin / Meadow saxifrage (Saxifraga granulata), a rare plant in Surrey, but occasionally abundant in churchyards. St Laurence churchyard, Seale, Surrey, England, May.