RENDAHL, BIRDS FROM THE PEARL ISLANDS. 11 



Fam. Phalacrocoracidae. 

 2. Phalacrocorax vigua vigua (Vieillot). 



Phalacrocorav vigua vigua Thayer and Bångs, Bali. Mus. Comp. Zoöl. XLVI. 

 1905. 141 (San Miguel: Saboga). 



Dr. Bovallius found this Cormorant very common in 

 P a c h e c a, which island it inhabited together with Boobies 

 and Brown Pelicans. The interiör of Pacheca forms a plateau 

 about 30 — 40 m in height. The whole plateau was thinly 

 wooded, and there prevailed at Dr. Bovallius visit at the 

 island in the last days of March, a very rich bird-life in the 

 almost leafless trees. Nearly every tree was occupied by 

 several nests, the groiind and the stocks were white- 

 washed by excrements and there was an unbearable stench 

 of rotten fish. A division of the space was strictly adhered 

 to between the different nesting species, the Cormorants in- 

 habiting the middle part of the plateau. 



»As a Pelican perched on a tree, where Cormorants were 

 resting, the latter made room for it with great submission, 

 whereas the Boobies at similar attempts were immediately 

 driven away. » 



Thayer and Bångs record the finding on April 14th of 

 a nest containing six incubative eggs. At Pacheca towards 

 the end of March the birds were already eagerly occupied with 

 building their nests of twigs and leaves. 



Great flocks of Cormorants were seen at the southern 

 shore of Bayoneta, where they had excellent fishing-pla- 

 ces in the shoal water. They bred, however, not in Bayoneta, 

 but came together from the adjacent islets. 



On San E 1 m o the Cormorants were, as in Pacheca, 

 very common inhabitants. 



Fregatidae. 

 3. Fregata ac^uila (Linné). i 1 -i 



Fregata aquila Thayer and Bångs, Bali. Mus. Comp. Zoöl. XLVI. 1905. 141 

 (San Miguel; Saboga). 



The above authors record, t hat Mr. Brown collected 

 eggs of this species during his visit to the islands in March 

 and April. 



