Jonathan Harrod / White-fronted Tern (Sterna striata) male presenting a fish as part of courtship display, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / White-fronted Tern (Sterna striata) presenting a fish as part of courtship display, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / White-faced Heron (Egretta novaehollandiae), Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / White-faced Heron (Egretta novaehollandiae) striking at prey, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Variable Oystercatcher (Haematopus unicolor) pair displaying and chasing away rival pair, Coromandel Peninsula, New Zealand

Jonathan Harrod / Variable Oystercatcher (Haematopus unicolor) displaying, Coromandel Peninsula, New Zealand

Jonathan Harrod / Variable Oystercatcher (Haematopus unicolor), Opoutere Beach, Coromandel Peninsula, New Zealand

Jonathan Harrod / Spotted Shag (Phalacrocorax punctatus) on nest, Kaikoura, New Zealand

Jonathan Harrod / South Island Oystercatcher (Haematopus finschi), Christchurch, New Zealand

Jonathan Harrod / Silvereye (Zosterops lateralis), Christchurch, New Zealand

Jonathan Harrod / Silvereye (Zosterops lateralis) on cherry blossom in spring, Christchurch, New Zealand

Jonathan Harrod / Pacific Reef-Egret (Egretta sacra) wading, Kaikoura, New Zealand

Jonathan Harrod / Pukeko (Porphyrio porphyrio melanotus) chick hatching, Christchurch, New Zealand

Jonathan Harrod / Pukeko (Porphyrio porphyrio melanotus) males eagerly pursuing female, Christchurch, New Zealand

Jonathan Harrod / Pukeko (Porphyrio porphyrio melanotus) pair courting, Christchurch, New Zealand

Jonathan Harrod / Black-winged Stilt (Himantopus himantopus) newly hatched chick sits on nest with remaining eggs, Christchurch, New Zealand

Jonathan Harrod / Black-winged Stilt (Himantopus himantopus) foraging, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Black-winged Stilt (Himantopus himantopus) calling, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Pied Cormorant (Phalacrocorax varius) in breeding plumage, Christchurch, New Zealand

Jonathan Harrod / South Island Oystercatcher (Haematopus finschi) group flying, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Sacred Kingfisher (Todirhamphus sanctus), Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Red-breasted Plover (Charadrius obscurus), Coromandel Peninsula, New Zealand

Jonathan Harrod / Red-breasted Plover (Charadrius obscurus) walking amongst shells, Omaha Beach, New Zealand

Jonathan Harrod / Common Starling (Sturnus vulgaris) walking, Christchurch, New Zealand

Jonathan Harrod / Eurasian Blackbird (Turdus merula) male, Christchurch, New Zealand

Jonathan Harrod / White-fronted Tern (Sterna striata) pair mating, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Pukeko (Porphyrio porphyrio melanotus) pair mating, Christchurch, New Zealand

Jonathan Harrod / California Quail (Callipepla californica) male, Christchurch, New Zealand

Jonathan Harrod / Bar-tailed Godwit (Limosa lapponica) group landing, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Double-banded Plover (Charadrius bicinctus) on ground nest, Lake Ellesmere, New Zealand

Jonathan Harrod / Double-banded Plover (Charadrius bicinctus) newly hatched chick, Lake Ellesmere, New Zealand

Jonathan Harrod / Great Crested Grebe (Podiceps cristatus) with chick on its back, Lake Alexandrina, New Zealand

Jonathan Harrod / Great Crested Grebe (Podiceps cristatus) in breeding plumage, Lake Alexandrina, New Zealand

Jonathan Harrod / Great Crested Grebe (Podiceps cristatus) on nest, Lake Alexandrina, New Zealand

Jonathan Harrod / Great Crested Grebe (Podiceps cristatus) on nest, Lake Alexandrina, New Zealand

Jonathan Harrod / Great Crested Grebe (Podiceps cristatus) grooming chick on its back, Lake Alexandrina, New Zealand

Jonathan Harrod / Pukeko (Porphyrio porphyrio melanotus) wading, Christchurch, New Zealand

Jonathan Harrod / Black-winged Stilt (Himantopus himantopus) attending to eggs in nest, Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Sacred Kingfisher (Todirhamphus sanctus), Avon Heathcote Estuary, Christchurch, New Zealand

Jonathan Harrod / Coot (Fulica atra) drying feathers, Christchurch, New Zealand