Tui De Roy / Atlantic yellow-nosed albatross (Thalassarche chlororhynchos). nesting amid Blechnum palmiforme tree ferns. Gough Island, Gough and Inaccessible Islands UNESCO World Heritage Site, South Atlantic.

Nick Garbutt / Adult Helmet Vanga (Euryceros prevostii) incubating a clutch of 3 eggs. Nest constructed in the fork of a Bird's Nest Fern (Asplenium sp.) Masoala National Park, north east Madagascar.

Bence Mate / Leaf cutter ants (Atta sp) female worker ants carry pieces of fern leaves to nest, reflected in water, Costa Rica, December. Winner, Eric Hosking award, 2011 Wildlife Photographer of the Year competit...

Tui De Roy / Atlantic yellow-nosed albatross (Thalassarche chlororhynchos). nesting on fern slopes. Gough Island, South Atlantic

Tui De Roy / Atlantic yellow-nosed albatross (Thalassarche chlororhynchos) nesting on fern slopes. Gough Island, Gough and Inaccessible Islands UNESCO World Heritage Site, South Atlantic.

Ingo Arndt / Bird's Nest Fern (Asplenium nidus) and view of east coast at sunset, Christmas Island National Park, Christmas Island, Indian Ocean, Australian Territory

Cyril Ruoso / Bird's nest ferns (Asplenium nidus) on a granite boulder, Yakushima island, Japan.

Cyril Ruoso / Bird's nest fern (Asplenium nidus) growing on a granite boulder, Yakushima Island, Japan, November.

Bernard Castelein / Nursery-web spider (Pisaura mirabilis) female on top of fern leaf nest with young spiders inside, Brasschaat, Belgium, July.

Bernard Castelein / Nursery-web spider (Pisaura mirabilis) female on top of fern leaf nest with young spiders inside, Brasschaat, Belgium, July.

Bernard Castelein / Nursery-web spider (Pisaura mirabilis) female on top of fern leaf nest with young spiders inside, Brasschaat, Belgium, July.

Bernard Castelein / Nursery-web spider (Pisaura mirabilis) female on top of fern leaf nest, Brasschaat, Belgium, July.

Nick Garbutt / Helmet Vanga (Euryceros prevostii) nest including a clutch of 3 eggs. Nest constructed in the fork of a Bird's Nest Fern (Asplenium sp.) Masoala National Park, north east Madagascar.

Cyril Ruoso / Bird's Nest Fern (Asplenium nidus) on a granite boulder, Yakushima Island, Japan

Cyril Ruoso / Bird's Nest Fern (Asplenium nidus) hanging on a granite boulder, Yakushima Island, Japan

Sebastian Kennerknecht / Bird's Nest Fern (Asplenium nidus) pair in tree, Tawau Hills Park, Sabah, Borneo, Malaysia

Piotr Naskrecki / Weeping Spleenwort (Asplenium flaccidum) epiphytes, New Zealand

Chien Lee / Bird's Nest Fern (Asplenium nidus) in montane forest of Gunung Salak, Indonesia

Chien Lee / Bird's Nest Fern (Asplenium nidus) in montane forest of Gunung Salak, Indonesia

Tim Laman / Bird's Nest Fern (Asplenium nidus) growing on the side of a tree trunk high in the rainforest canopy, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Tim Laman / Bird's Nest Fern (Asplenium nidus) growing on the side of a tree trunk high in the rainforest canopy, Gunung Palung National Park, Borneo, West Kalimantan, Indonesia

Alan Watson / Tree in rainforest at 800m with birds nest fern (Asplenium nidus), Andasibe-Mantadia National Park, Madagascar January 2009

Murray Cooper / Bird's Nest Fern (Asplenium sp) growing on forest floor, Amazon, Ecuador

Thomas Marent / Bird's Nest Fern (Asplenium nidus) in tropical rainforest, Masoala National Park, Madagascar

Thomas Marent / Bird's Nest Fern (Asplenium sp) in tropical rainforest with buttress root, Nosy Mangabe island, Masoala National Park, Madagascar

Thomas Marent / Madagascar Moon Moth (Argema mittrei) with bird's nest fern, Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Madagascar Moon Moth (Argema mittrei) with bird's nest fern, Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Bird's Nest Fern (Asplenium nidus) in rainforest, Montagne D'Ambre National Park, Antsiranana, northern Madagascar

Thomas Marent / Bird's Nest Fern (Asplenium nidus) in tropical rainforest, Montagne D'Ambre National Park, Antsiranana, northern Madagascar

Thomas Marent / Bird's Nest Fern (Asplenium nidus) in rainforest, Montagne D'Ambre National Park, Antsiranana, northern Madagascar

James Aldred / Canopy scientist, John Pike, being winched up to study epiphytic Birds nest fern {Asplenius sp} growing in lowland Dipterocarp tree {Shorea shorea} Danum valley, Sabah, Borneo, Malaysia, 2005

James Aldred / Canopy scientist, John Pike, being winched up to study epiphytic Birds nest fern {Asplenius sp} growing in lowland Dipterocarp tree {Shorea shorea} Danum valley, Sabah, Borneo, Malaysia, 2005

Konrad Wothe / Hen and Chicken Fern (Asplenium bulbiferum) new growth, New Zealand

Nick Garbutt / Helmet vanga on nest in Birds-nest fern {Euryceros prevostii} Masoala NP, NE Madagascar

Piotr Naskrecki / Weeping Spleenwort (Asplenium flaccidum) epiphyte, New Zealand

Klaus Nigge / Ladders up tree trunk leading to hide overlooking nest of Philippine eagle (Pithecophaga jefferyi), Mount Kitanglad Range, Mindanao, Philippines, May 2007.

Nigel Cattlin / Bird's nest fern (Asplenium nidus) houseplant in a pot .

Guy Edwardes / Bird's nest orchid (Neottia nidus-avis), Powerstock Common DWT reserve, Dorset, UK, June.

Emanuele Biggi / Ant-fern (Lecanopteris sp) structure which allows ants to symbiotically live with the fern. Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Ant-fern (Lecanopteris sp) structure which allows ants to symbiotically live with the fern. Bako National Park, Sarawak, Borneo.

Emanuele Biggi / Ant-fern (Lecanopteris sp) structure which allows ants to symbiotically live with the fern. Bako National Park, Sarawak, Borneo.

Juergen Freund / Bird's nest fern (Asplenium nidus) growing on tree trunk. Daintree Rainforest, Wet Tropics of Queensland, Australia.

Juergen Freund / Bird's nest fern (Asplenium australasicum) and liana amongst boulders on river bank. Mossman Gorge, Daintree Rainforest, Wet Tropics of Queensland, Australia. 2014.