Sven Zacek / Ural owl (Strix uralensis) female stretching wings whilst perched in Spruce (Picea sp) tree. Tartumaa, Southern Estonia. May.

Sven Zacek / Ural owl (Strix uralensis) female on nest after snowfall. Tartumaa, Southern Estonia. March.

Sven Zacek / Ural owl (Strix uralensis) female on nest in tree stump. Tartumaa, Southern Estonia. April.

Sven Zacek / Ural owl (Strix uralensis) female in flight having taken off from nest, in evening light. Tartumaa, Southern Estonia. May.

Paul Hobson / Rufous motmot (Baryphthengus martii) perched on branch. Rancho Naturalista, Cartago, Costa Rica.

Paul Hobson / Resplendent quetzal (Pharomachrus mocinno) male perched on branch. Costa Rica.

Ingo Arndt / Royal Flycatcher (Onychorhynchus coronatus) in defensive posture, Santa Rosa National Park, Costa Rica

Ingo Arndt / Royal Flycatcher (Onychorhynchus coronatus) in defensive posture, Santa Rosa National Park, Costa Rica

Tui De Roy / Flightless cormorant (Phalacrocorax harrisi), two on rock. Bird drying wings in foreground with other sitting on nest in background. Cape Douglas, Fernandina Island, Galapagos.

Tui De Roy / Blue-footed booby (Sula nebouxii) landing. Punta Vicente Roca, Isabela Island, Galapagos.

Nick Garbutt / Andean cock-of-the-rock (Rupicola peruvianus), male displaying at lek in tree. Manu Biosphere Reserve, Amazonia, Peru.

Staffan Widstrand / Wild Wonders of China / Golden pheasant (Chrysolophus pictus) male jumping, Yangxian Biosphere Reserve, Shaanxi, China