Category: Suliformes

Rarest birds of the World: chatham Island Shag (Phalacrocorax onslowi)

This species occupies a very area on the Chatham Islands, New Zealand. The past 10 years, surveys indicate that the species is in decline. In 2011 the population was estimated to be about 1000 individuals. The breeding colonies suffered much from agricultural activities and feral mammals. These colonial ground breeding species trample their eggs while […]

Pseudo-eggs of brown sula leucogaster andblue-footed s. nebouxii boobies in the gulf of california, mexico

Brown Booby (Sula leucogaster) Science Article 4 abstract Pseudo-eggs, foreign round objects, notably eggs of other speciesor pebbles, are common in some ground-nesting species, and havebeen reported especially in larids (Sugden 1947, Twomey 1948,Coulter 1980, Conover 1985). As many as 10% of Ring-billedGull Larus delawarensis nests in Washington, USA includedpseudo-eggs (Conover 1985). The nests of […]

Weights, hematology, and serum chemistry of free-ranging brown boobies (sula leucogaster) in johnston atoll, central pacific

Brown Booby (Sula leucogaster) Science Article 13 abstract Hematologie and serum chemistry values are reported for 105 brown boobies (Sula leucogaster) from Johnston Atoll, Central Pacific. Hematocrit, estimated total plasma solids, total and differential white cell counts, serum glucose, calcium, phosphorus, uric acid, total protein, albumin, globulin, aspartate aminotransferase, and creatinine phosphokinase were analyzed. H?matologie […]

Phylogeography of Sula: the role of physical barriers to gene flowin the diversification of tropical seabirds

Brown Booby (Sula leucogaster) Science Article 11 abstract We examined mitochondrial cytochrome b sequence variation in masked Sula dactylatra,red-footed S. sula, and brown S. leucogaster boobies sampled from islands inthe central and eastern Pacific Ocean and in the Caribbean Sea. Each species showeda different phylogeographic pattern. Whereas haplotypes in masked and red-footedboobies were shared across […]