Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Island Archipelago, Ecuador

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Island Archipelago, Ecuador

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Island Archipelago, Ecuador

Great Egret (Egretta alba), adult, in flight with nesting material against blue sky, Florida, USA

Great Spotted Woodpecker (Dendrocopos major), Bitburg, Rhineland-Palatinate, Germany, Europe

Flying great cormorant (Phalacrocorax carbo) with nesting material building a nest, Lembruch, Lower Saxony, Germany, Europe

Spoonbill (Platalea leucorodia), flying with nesting material, Langeoog, Lower Saxony, Germany, Europe

Flying Northern gannet (Morus bassanus) with material for nest building, Skouvikurbjarg, Langanes Peninsula, Norourland eystra, Iceland, Europe

African penguin (Spheniscus demersus), adult with two chicks, nesting material, Beach, Simonstown, Western Cape, South Africa, Africa

Barn swallow (Hirundo rustica), with nesting material, Guxhagen, Hesse, Germany, Europe

Puffin (Fratercula arctica), Latrabjarg Peninsula, West Fjords, Iceland, Europe

Puffin (Fratercula arctica), Puffin, nesting material in beak, Staple Island, Farne Islands Nature Reserve, Farne Islands, Northumberland, England, United Kingdom, Europe

Northern gannet (Morus bassanus) adult bird collecting nesting material amongst flowering Red campion plants on a clifftop, Yorkshire, England, United Kingdom, Europe

Bald eagle (Haliaeetus leucocephalus) in flight carrying nesting material; Quebec, Canada