Authenticated by Dr Brooks Childress, Chair, IUCN-SSC/Wetlands International Flamingo Specialist Group.
http://www.wwt.org.uk/flamingo
Alga: A collection of taxonomically unrelated groups that share some common features but are grouped together for historical reasons and for convenience. They are of simple construction, and are mainly photoautotrophic, obtaining all their energy from light and carbon dioxide, and possess the photosynthetic pigment, chlorophyll A. They range in complexity from microscopic single cells to very complex plant-like forms, such as kelps. Algal groups include blue-green algae (cyanobacteria), red algae (rhodophyta), green algae (chlorophyta), brown algae and diatoms (chromista) as well as euglenophyta.
Primaries: In birds, the outer flight feathers.
Secondaries: The shorter flight feathers projecting along the inner edge of a bird's wing.