The Peruvian Pelican

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Pelecaniformes
Family: Pelecanidae
Genus: Pelecanus
Species: P. thagus

Found these guys - also at Paracas - first sitting on a boat and later on at Ballestas Islands.

The second and third pics are interesting: first the pelicans have some intruders (Humboldt penguins among them, can you find them?) and then they are the ones that crash the party of the cormorants!!!

They live on the west coast of South America, from Lobos de Tierra Island in Peru to Pupuya Islet in Chile.
These birds are dark in colour with a white stripe from the top of the bill, up to the crown and down the sides of the neck and have long tufted feathers on the top of their heads.
Their main breeding season occurs from September to March, during which they usually produce two or three eggs. These are incubated for approximately 4 to 5 weeks, with the rearing period lasting about 3 months.
This bird feeds on several fish species, showing a strong preference for Peruvian Anchovies. It feeds by plunge-diving, like the Brown Pelican.

I found out that it is not clear if it is a Brown Pelican or another species; this is what I found on http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Brown_Pelican.html:

"The Peruvian race of the Brown Pelican, found along the Pacific Coast of South America from southern Ecuador to Chile, is sometimes considered a separate species. It is larger than the other races, has fine white streaking on the feathers of the underparts, and has a blue pouch in the breeding season ".

So, can anyone clarify this for me??? THANKS!!!