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Parts of the body and plumage

Here a description of the commonly used terms to describe birds' bodies and plumages. For more terms see the glossary. There is a separate page on birds' field of vision.

These examples are currently based on Australian bird species. A separate page for Germany/Europe is yet to be written.

Lateral view

Below we show the most frequently used terms regarding a bird's body and plumage. This is best done by using a sideways (lateral) view.

Lateral view of an Olive-backed Oriole; for a description of the wing plumage see below


The wing plumage can be best seen when birds spread their wings. Here an example of the underwing feathers.

Magpie Goose stretching its wings


The wing plumage can be best seen when birds spread their wings. Here an example of the upperwing feathers.

Black-necked Stork hunting in shallow waters, casting a shadow with its outstretched wings


Some birds have prominent ceres, i.e. bare, fleshy parts just above their bills, in which the nostrils are located. The cere can sometimes used for identification purposes. Often the ceres of immature birds have different colours compared to those of adult bird. Or, as in the case shown below, the ceres of males and females differ.

Close-up portrait of a male Budgerigar, with its blue cere; females have fleshy-coloured ceres


Many birds have crests, consisting of a number of feathers that can be erected. Some crests are inconspicuous, giving a bird's head a helmet-shaped appearance, others are prominent and colourful, as e.g. the Sulphur-crested Cockatoo's.

Prominent, colourful crest of a Sulphur-crested Cockatoo


Four small feathers on a bird's remnant "thumb" are called alula. Often they are inconspicuous, but sometimes they can be seen quite clearly, as shown below.

Prominent alula on the wing of a White-bellied Sea-Eagle


Some birds have iridescent feathers in their wings. One special kind of such iridescence is a patch found on the upperwings of ducks, called "speculum".

Preening Australian Wood Duck displaying its speculum