JBJ-BIRDTOURS by Jesper Bay Jacobsen
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      <a target="_blank" href="https://jesperbayjacobsen.com/header.php?file=bview&search=species&id=677" >More documentation here.</a>

           
      Brown Booby (Sula leucogaster)
      ebird/Clements (2019)
      Brown Booby (Sula leucogaster) [Playa de Oro, Manzanillo, Colima (Col), Mexico] 817    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Playa de Oro, Manzanillo, Colima (Col), Mexico
      2013-01-15

      Adult female. Breeding on the nearby ocean rock Peña Blanca only two kilometers from the coast - in their thousands. This bird though, probably will never breed again since it had an injured wing and couldn't take off.



      Brown Booby (Sula leucogaster) [Isla Isabel, Nayarit (Nay), Mexico] 826    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Isla Isabel, Nayarit (Nay), Mexico
      2013-02-02

      Breeding pair. The male of the subspecies is very different from the traditional birds with its frosty white head and neck and the blue party around the eye and base of bill.



      Brown Booby (Sula leucogaster) [Isla Isabel, Nayarit (Nay), Mexico] 827    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Isla Isabel, Nayarit (Nay), Mexico
      2013-02-02

      Courting breeding pair. A hot stick!



      Brown Booby (Sula leucogaster) [Isla Isabel, Nayarit (Nay), Mexico] 828    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Isla Isabel, Nayarit (Nay), Mexico
      2013-02-02

      Adult female with yellow bill base and feet and the brown lore.



      Brown Booby (Sula leucogaster) [Isla Isabel, Nayarit (Nay), Mexico] 829    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Isla Isabel, Nayarit (Nay), Mexico
      2013-02-02

      Adult male with the white head and blue around the eye.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3015    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Adult female. A curled-up foot like this I've never seen, but the rest of the bird looks classic for and unmistakable in these waters.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3016    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Young bird. The rather well-marked breast demarcation with scattered brown spots on the belly make me think it is a bird in its third calendar year rather than the second.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3017    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Juvenile. Fresh and tight plumage. Even at this age the hint of the breast line is visible. The juvenile Red-footed Booby can appear similar, but normally has a more orangy pale tone to the brownish plumage, but is also very rare in this part of Mexico.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3018    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Adult female with yellow below the bill. Unmistakable with the clear distinction between the brown breast and the crispy white belly.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3019    (4 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Adult male? The bird landing. The plumage looks like it belongs to an adult, and the bluish gray bill looks like it belongs to a male, but why isnt' it frosty white in the head then? Is it only a breeding character after all, or is it something only older males have, making this one a young adult? Other species are Heermann's Gull, Blue-footed Booby and very likely a young Brown Booby.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3020    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Wall climbers. Also a Blue-footed Booby



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3021    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Typical adult male of this white headed subspecies.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3022    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Young bird. Not juvenile, though, because it looks like the hand is molting and the underwing markings and belly markings seem too advanced.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3023    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Adult male roosting in the sharp midday sun.



      Brown Booby (Sula leucogaster) [Islas Marietas, Nayarit (Nay), Mexico] 3024    (1 photos)
      Brown Booby (Sula leucogaster brewsteri) 
      Boobies and Gannets (Sulidae)

      Islas Marietas, Nayarit (Nay), Mexico
      2019-04-03

      Two young birds. There was a good number of young birds present today, but thinking about the total number of birds, in their hundreds, there should have been more if all birds were breeding at the same time, why I think they do not.







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