Andy Trowbridge / Little pied cormorant (Microcarbo melanoleucos previously known as Phalacrocorax melanoleucus) perched on branch with wings outstretched. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Pied shag/cormorant (Phalacrocorax varius) in flight. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Little pied cormorant (Microcarbo melanoleucos) perched on branch. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Pied shag/cormorant (Phalacrocorax varius) in flight. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Pied shag/cormorant (Phalacrocorax varius) portrait. Ashley River, Canterbury, New Zealand. July.

Nick Upton / Oystercatchers (Haematopus ostralegus) resting and preening at a roost site, with a Shag (Phalacrocorax aristotelis) holding its wings out to dry next to them, Cornwall, England, UK, April.

Nick Upton / Slow motion clip of an Oystercatcher (Haematopus ostralegus) struggling to climb up a slope at a coastal roost site as a Shag (Phalacrocorax aristotelis) approaches and flaps its wings, England, UK,...

Jiri Lochman / Little pied cormorant (Phalacrocorax melanoleucos), Cape Range National Park, Ningaloo Coast UNESCO Natural World Heritage Site, Western Australia, Australia.

Roger Powell / Little pied cormorant (Phalacrocorax melanoleucos) sitting on marine post and preening. Werribee Sewerage Farm, Werribee, Victoria, Australia

Brent Stephenson / Little pied cormorant (Phalacrocorax melanoleucos) drying with wings outstretched, perching on branch, Hawkes Bay, New Zealand, November.

Brent Stephenson / Little pied cormorant (Phalacrocorax melanoleucos) shaking water from its plumage, sitting on a branch close to the surface of the water, Tamatea, Hawkes Bay, New Zealand, November.

Brent Stephenson / Little pied cormorant (Phalacrocorax melanoleucos) on a branch close to the surface of the water, Tamatea, Hawkes Bay, New Zealand, November.