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  • Male of southern masked weaver (Ploceus velatus) building nest at Lower Sabie, Kruger NP, South Africa.
    45370-D.jpg
  • Male of southern masked weaver (Ploceus velatus) building nest at Lower Sabie, Kruger NP, South Africa.
    45369-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo  from Lower Sabie, Kruger NP, South Africa.
    45366-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo from Lower Sabie, Kruger NP, South Africa.
    45368-D.jpg
  • Black-legged kittiwakes (Rissa tridactyla) nesting in the window shelf of an old boathouse in Vadsö, Varanger, eastern Finnmark, Norway in March.
    44496-D.jpg
  • Northern Gannets (Morus bassanus) nesting in a large bird cliff at the island of Runde, north-western Norway.
    41542-D.jpg
  • Madagascan nightjar (Caprimulgus madagascariensis) nesting in the forest close to Palmarium Resort, eastern Madagascar.
    43499-D.jpg
  • Hydrurga Rocks, Antarctica. Nikon D850, 70-200mm @ 170mm, f5.6, EV+1.33, 1/2000sec, ISO640, Aperture priority
    Chinstrap Penguins (44163-D).jpg
  • Colony of black-browed albatross (Thalassarche melanophrys) nesting at Saunders Island (close to Rockery cabin), the Falkland Islands.
    43315-D.jpg
  • Pair of southern masked weaver (Ploceus velatus) building nest at Lower Sabie, Kruger NP, South Africa.
    45371-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo from Lower Sabie, Kruger NP, South Africa.
    45365-D.jpg
  • Glaucous Gull (Larus hyperboreus) nesting at Hornsund, south-western Spitsbergen, Svalbard.
    44788-D.jpg
  • Antarctic cormorants ((Phalacrocorax bransfieldensis) nesting at Hydrurga Rocks, Antarctica.
    44161-D.jpg
  • Northern Gannets, Morus bassanus, nesting in a large bird cliff at the island of Runbde, north-western Norway.  Do note how the birds have built their colorful nests from fishing nets gathered from the ocean.
    41532-D.jpg
  • Malaysian pied fantail (Rhipidura javanica) nesting in Danum Valley, Sabah, Borneo.
    42684-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo from Lower Sabie, Kruger NP, South Africa.
    45363-D.jpg
  • Red-footed Booby (Sula sula) nesting at Genovesa, Galapagos.
    44833-D.jpg
  • Colony of chinstrap penguins (Pygoscelis antarctica) at Astrolabe Island, the Antarctic Peninsula.
    150093-D.jpg
  • Southern rockhopper (Eudyptes chrysocome) nests at Saunders Island, the Falkland Islands.
    43299-D.jpg
  • Southern rockhopper (Eudyptes chrysocome) nests at Saunders Island, the Falkland Islands.
    43300-D.jpg
  • Colony of black-browed albatross (Thalassarche melanophrys) nesting at Saunders Island (close to Rockery cabin), the Falkland Islands.
    43291-D.jpg
  • Northern Gannets (Morus bassanus) nesting in a large bird cliff at the island of Runde, north-western Norway. Do note how the birds have built their colorful nests from fishing nets gathered from the ocean.
    41543-D.jpg
  • Red-footed Booby (Sula sula) nesting at Genovesa, Galapagos.
    44839-D.jpg
  • Great Black-backed Gull (Larus marinus) nesting. Photo from Hidra, south-western Norway in early May.
    44634-D.jpg
  • Madagascan nightjar (Caprimulgus madagascariensis) nesting in the forest close to Palmarium Resort, eastern Madagascar.
    43500-D.jpg
  • Southern rockhopper (Eudyptes chrysocome) nests at Saunders Island, the Falkland Islands.
    43302-D.jpg
  • Gentoo penguin (Pycoscelis papua) nests at Elephant Point, South Shetland Island, Antarctica
    43122-D.jpg
  • Northern Gannets (Morus bassanus) nesting in a large bird cliff at the island of Runde, north-western Norway.
    41537-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo from Lower Sabie, Kruger NP, South Africa.
    45418-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo from Lower Sabie, Kruger NP, South Africa.
    45367-D.jpg
  • Red-footed Booby (Sula sula) nesting at Genovesa, Galapagos.
    44821-D.jpg
  • Glaucous Gull (Larus hyperboreus) nesting at Hornsund, south-western Spitsbergen, Svalbard.
    41256-D.jpg
  • Colony of Chinstrap Penguins (Pygoscelis antarcticus) at Hydrurga Rocks, Antarctica.
    44163-D.jpg
  • Saunders Island, West Falkland Island. Nikon D850, 200-400mm @ 400mm, f4, 1/4000 sec, ISO320, Aperture priority
    Black-browed Albatross nesting (4322...jpg
  • Breeding colony of King Penguins (Aptenodytes patagonicus patagonicus) at Volunteer Point, the Falklands.
    43441-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo from Lower Sabie, Kruger NP, South Africa.
    45364-D.jpg
  • Common Gull (Larus canus canus) nesting in a cave at the isalnd of Runde, Norway.
    41997-D.jpg
  • Colonies of southern rockhopper penguins mixed with blue-eyed shags at Saunders Island, the Falklands.
    43313-D.jpg
  • Breeding magellanic penguins (Sphreniscus magellanicus) outside their burrows at Saunders Island, the Falkland Islands.
    43274-D.jpg
  • Pair of ringed kingfishers (Megaceryle torquata) with nest opening visible in the muddy banks of Cuiabá River, Pantanal, Brazil.
    43005-D.jpg
  • Northern Gannets, Morus bassanus, nesting in a large bird cliff at the island of Runbde, north-western Norway.  Do note how the birds have built their colorful nests from fishing nets gathered from the ocean.
    41534-D.jpg
  • Pair of southern masked weaver (Ploceus velatus) building nest at Lower Sabie, Kruger NP, South Africa.
    45372-D.jpg
  • Glaucous gull (Larus hyperboreus) from Spitsbergen, Svalbard, Norway.
    44450-D.jpg
  • Glaucous Gull (Larus hyperboreus) nesting at Hornsund, south-western Spitsbergen, Svalbard.
    41255-D.jpg
  • Mother and subadult Kittiwakes (Rissa tridactyla) on their nest in the bird cliff at Bulbjerg, northern Jylland, Denmark.
    43910-D.jpg
  • Southern rockhopper (Eudyptes chrysocome) nests at Saunders Island, the Falkland Islands.
    43301-D.jpg
  • Great Blue Heron (Ardea herodias) nesting in the mangrowe swamp at Elizabeth Bay, Isabela, Galapagos.
    42244-D.jpg
  • Northern Gannets (Morus bassanus) nesting in a large bird cliff at the island of Runde, north-western Norway.
    41540-D.jpg
  • Northern Gannets, Morus bassanus, nesting in a large bird cliff at the island of Runbde, north-western Norway.  Do note how the birds have built their colorful nests from fishing nets gathered from the ocean.
    41533-D.jpg
  • On the top of the Island Genovesa, Galapagos with Nazca Boobies nesting sites.
    78075-D.jpg
  • Great Black-backed Gull (Larus marinus) nesting. Photo from Hidra, south-western Norway in early May.
    44633-D.jpg
  • Black-legged kittiwakes (Rissa tridactyla) nesting in the window shelf of an old boathouse in Vadsö, Varanger, eastern Finnmark, Norway in March.
    44497-D.jpg
  • Colony of black-browed albatross (Thalassarche melanophrys) nesting at Saunders Island (close to Rockery cabin), the Falkland Islands.
    43281-D.jpg
  • Nazca Boobies (Sula granti) nesting at Genovesa, Galapagos.
    44817-D.jpg
  • Colony of chinstrap penguins (Pygoscelis antarctica) at Astrolabe Island, the Antarctic Peninsula.
    44185-D.jpg
  • Gentoo penguin (Pycoscelis papua)  at Penguin Island, South Shetland Islands, Antarctica
    44166-D.jpg
  • Pair of Antarctic cormorants ((Phalacrocorax bransfieldensis) at their nesting site at Hydrurga Rocks, Antarctica.
    44162-D.jpg
  • Brown Skua (Stercorarius antarcticus) nesting at Sea Lion Island, the Falklands.
    43396-D.jpg
  • Breeding magellanic penguins (Sphreniscus magellanicus) outside their burrows at Saunders Island, the Falkland Islands.
    43275-D.jpg
  • Kittiwakes (Rissa tridactyla) nesting in the bird cliff at Bulbjerg, northern Jylland, Denmark.
    43908-D.jpg
  • Colonies of southern rockhopper penguins mixed with blue-eyed shags at Saunders Island, the Falklands.
    43314-D.jpg
  • Breeding magellanic penguins (Sphreniscus magellanicus) outside their burrows at Saunders Island, the Falkland Islands.
    43273-D.jpg
  • Colony of black-browed albatross (Thalassarche melanophrys) nesting at Saunders Island (close to Rockery cabin), the Falkland Islands.
    43270-D.jpg
  • Thick-billed weaver (Amblyospiza albifrons) building nest. Photo from Lower Sabie, Kruger NP, South Africa.
    45419-D.jpg
  • Southern masked weaver (Ploceus velatus, male) at Lower Sabie, Kruger NP, South Africa.
    45373-D.jpg
  • White morth of Red-footed Booby (Sula sula) nesting at Genovesa, Galapagos.
    44819-D.jpg
  • Juvenile Barn Swallows (Hirundo rustica) yelling for food.
    4905-D.jpg
  • Pair of gentoo penguin (Pycoscelis papua) nests at Elephant Point, Livingston Island, South Shetland Islands, Antarctica
    43123-D.jpg
  • Jabiru stork (Jabiru mycteria) with three chicks in the nest. Araras Ecolodge, Pantanal, Brazil.
    43010-D.jpg
  • Pair of Flightless Comorants (Phalacrocorax harrisi) nesting at Elizabeth Bay, Isabela, Galapagos. Note the nest built of dead sea urchins.
    42243-D.jpg
  • Hyacinth macaws (Anodorhynchus hyacinthinus) fighting over nesting site. Pantanal, Brazil.
    43012-D.jpg
  • A pair of jabiru storks (Jabiru mycteria) nesting in Porto Jofre, Mato Grosso, Brazil.
    43001-D.jpg
  • Hyacinth macaw (Anodorhynchus hyacinthinus) nesting in an artifical nesting site at Araras Ecolodge, Pantanal, Brazil.
    43550-D.jpg
  • Pair of hyacinth macaws (Anodorhynchus hyacinthinus) nesting in an artifical nesting site at Araras Ecolodge, Pantanal, Brazil.
    43011-D.jpg
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Alf J. Nilsen Natural History images

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