Nigel Cattlin / Typical symptom of blank ears or whiteheads caused by root and stem diseases in a wheat crop, premature ripening

Brent Stephenson / Juvenile Whitehead (Mohoua albicilla) in worn plumage, foraging in the outer branches of a shrub. Tiritiri Matangi Island, Auckland, New Zealand, September.

Brent Stephenson / Recently fledged juvenile Whitehead (Mohoua albicilla) peers through the branches. Tiritiri Matangi Island, Auckland, New Zealand, January.

Brent Stephenson / Immature male Whitehead (Mohoua albicilla) in worn plumage, just completing tail moult. Tiritiri Matangi Island, Auckland, New Zealand, January.

Brent Stephenson / Adult male Whitehead (Mohoua albicilla) in fresh plumage, foraging in the outer branches of a shrub. Tiritiri Matangi Island, Auckland, New Zealand, July.

Brent Stephenson / Whitehead (Mohoua albicilla) peers out from a flowering bush whilst foraging, Tiritiri Matangi Island, Auckland, New Zealand, September.

Brent Stephenson / Female Whitehead (Mohoua albicilla) perched on a branch. Tiritiri Matangi Island, Auckland, New Zealand, September.

Brent Stephenson / Male Whitehead (Mohoua albicilla) perched on a small branch. Tiritiri Matangi Island, Auckland, New Zealand, September.

Brent Stephenson / Male Whitehead (Mohoua albicilla) perched amongst foliage, calling with bill open. Tiritiri Matangi Island, Auckland, New Zealand, September.

Brent Stephenson / Whitehead (Mohoua albicilla) perched amongst manuka (Leptospermum scoparium) flowers. Tiritiri Matangi Island, Auckland, New Zealand, September.

Robert Thompson / Aerial view of Whitehead Lighthouse, County Antrim, Northern Ireland, UK, September 2009

Robert Thompson / Aerial view of Whitehead Gobbins, coastal path, County Antrim, Northern Ireland, UK, September 2009

Chien Lee / Whitehead's Broadbill (Calyptomena whiteheadi) male at nest, Malaysia

Chien Lee / Whitehead's Broadbill (Calyptomena whiteheadi) male feeding chick at nest, Malaysia

Chien Lee / Whitehead's Broadbill (Calyptomena whiteheadi) male, Lawas, Sarawak, Borneo, Malaysia

Flip Nicklin / Sperm Whale (Physeter macrocephalus) researcher Hal Whitehead in crows nest spotting whales, Sri Lanka

Flip Nicklin / Sperm Whale (Physeter macrocephalus) researcher, Hal Whitehead, listening for whales with hydrophone, Sri Lanka

Nigel Cattlin / Yellow stem borer moth (Scirpophaga incertulas) caterpillar damage to Rice (Oryza sativa) stem causing aborted ear, Luzon, Philippines

Flip Nicklin / Bottlenose Whale (Hyperoodon ampullatus) researcher Hal Whitehead and children aboard Baleena tracking individuals, off Nova Scotia, Canada

Flip Nicklin / Whale researcher Hal Whitehead and family, on a research trip to the Galapagos, 1994

Flip Nicklin / Sperm Whale (Physeter macrocephalus) researcher Hal Whitehead listening to vocalizations on hydrophone, Sri Lanka

Flip Nicklin / Sperm Whale (Physeter macrocephalus) researcher, Hal Whitehead, listening for whales on hydrophone, Sri Lanka

Flip Nicklin / Sperm Whale (Physeter macrocephalus) researcher, Phil Gillian, listening for whales on hydrophone about Hal Whitehead's boat, Balaena, Sri Lanka