Domain: Eukarya - All members Photo located at

have a true nucleus and membrane

bound organelles.

Kingdom: Animalia - The members of this group are multi-cellular, eukaryotic, heterotrophic (consumes other organisms to obtain organic food molecules), motile at some stage of life, and lack a cell wall.

Phylum: Chordata - Organisms in this phyla have the following characteristic at some point in their development: a notochord (skeletal rod), dorsal, tubular nerve chord, endostyle (thyroid gland), a postanal tail and pharyngeal pouches

Class: Aves - All aves have wings with modified epidermal scales (feathers), internal fertilization, amniotic eggs and endothermic bodies.

Created by: Amanda BalesOrder: Anseriformes - All birds in this order inhabit aquatic environments that are medium to large in size. Members of this order include geese, swans, ducks, screamers, and magpie geese.

Family: Anatidae - Many members of this family are herbivorous that feed on seeds, roots, stems, leaves, and flowers of aquatic plants. Some members feed on small invertebrates in the water like plankton or algae.

Genus: Mergus - Members of this group include five different mergansers including the common, red-breasted, Brazilian, Auckland island, and scaly-sided mergansers. All of these birds live in aquatic environments.

Species: Mergus merganser - Mergus mergansers are the largest of the mergansers. The males are characterized by their dark green almost black head, bright orange bill, and white body. The females have rusty brown heads, orange bills, and gray bodies.


Created by: Amanda Bales





The second phylogenetic tree is based on morphological similarities between the organisms in each of the categories. The third phylogenetic tree is also based on morphological similarities shared by the organisms in each group. However, the third phylogenetic tree also incorporates DNA evidence into the classification. The organisms in the final row are the closest relatives to the common merganser





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