Glossary

 
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© Sumit K Sen


Glossary of Bird Terminology
by Bikram Grewal

 

 

  • Adult      Mature, Capable of breeding.
  • Aerial     Making use of the open sky.
  • Altitudinal migrant     Moving between high mountains and lower foothills.
  • Apical     Outer extremities, particularly of the tail.
  • Aquatic     Living on or in water.
  • Arboreal     Living in trees.
  • Axillaries     Underwing feathers at the base of the wings, forming ‘armpits’
  • Basal     Innermost extremities, particularly of the tail.
  • Biotope     Area of uniform environment, flora and fauna.
  • Buff     Yellowish white with a hint of pale brown.
  • Canopy     Leafy foliage of treetops.
  • Cap     Upper part of head.
  • Carpal     Bend of a closed wing, sometimes called shoulder.
  • Casque     Growth above bill of hornbills.
  • Cere     Patch of bare skin on upper base of bill of raptors.
  • Colonial     Roosting or nesting in groups.
  • Confiding     Not shy.
  • Commensal     Living together with man for mutual benefit
  • Coverts     Small feathers on wings and base of tail.
  • Covey     Small group of partridges and allied species.
  • Crepuscular     Active at dusk (twilight) and dawn.
  • Crest     Extended feathers on head.
  • Crown     Upper part of head.
  • Culmen     Ridge on upper mandible of bill.
  • Diagnostic     Sufficient to identify a species or sub-species.
  • Dimorphic     Having two forms of plumage.
  • Diurnal     Active during daytime.
  • Drumming     Rhythmic territorial hammering on trees by woodpeckers
  • Eclipse     New dull plumage after breeding season, especially in ducks.
  • Endemic     Indigenous and confined to a place.
  • Eyestripe     Stripe through eye.
  • Family     Specified group of genera.
  • Feral     Escaped, and living and breeding in the wild.
  • Fledged     Having just acquired feathers and ready to leave nest.
  • Fledglings     Young birds which have just acquired feathers.
  • Flight feathers     Primary and secondary wing feathers.
  • Flushed     When disturbed into flight at close quarters.
  • Form     Sub-species.
  • Frugivorous     Fruit-eating.
  • Fulvous     Brownish-yellow.
  • Game birds     Pheasants, partridges and allied species.
  • Gape     Basal part of the beak (mainly for young birds and raptors).
  • Genera     Plural of genus.
  • Genus     Group of related species.
  • Gorget     Band across upper chest.
  • Granivorous     Grain-eating.
  • Gregarious     Sociable. Living in communities or flocks.
  • Hackles     Long and pointed neck feathers.
  • Hawking     Capturing insects in flight
  • Hepatic     Rust or liver coloured plumage phase, mainly in female cuckoos
  • Hunting group (or party)     Group of birds usually of different species, seeking food.
  • Immature     Plumage phases prior to adult
  • Iris     Coloured eye membrane surrounding pupil.
  • Irruption     Mass movement of a population from one place to another.
  • Jizz     Essence or striking characteristics of a species;
  • Juvenile     Immature bird immediately after leaving nest.
  • Leading edge     Front edge of wing.
  • Lobe     Fleshy extensions to side-edges of toes of some birds.
  • Local     Unevenly distributed.
  • Lores     Area between eye and bill base.
  • Malar     Stripe on side of throat.
  • Mandible     Each of the two parts of bill.
  • Mantle     Back, between wings.
  • Mask     Dark plumage round eye and ear-coverts.
  • Migration     Seasonal movement between distant places.
  • Mirror     White spots in wing-tips, mainly of gulls.
  • Morph     One of several distinct types of plumage in the same species.
  • Moult     Seasonal shedding of plumage.
  • Nape     Back of neck.
  • Necklace     Narrow line round neck.
  • Nocturnal Active at night.
  • Nomadic     Species without specific territory except when breeding.
  • Nominate     First sub-species to be formally named.
  • Orbital ring     Narrow ring of skin or feathers round the eye.
  • Order     Group of related families.
  • Passerines     Perching and song birds.
  • Pectoral     Breast area.
  • Pied     Black and white.
  • Plumes     Long, showy feathers, acquired during the breeding season
  • Precocial     Young hatched sighted and down-covered, e.g. ducklings.
  • Primaries     Outer flight feathers in wing.
  • Race     Sub-species.
  • Raptors     Birds of prey and Vultures, excluding owls.
  • Record     Published, or otherwise broadcast, occurrence.
  • Resident     Non-migratory and breeding in same place.
  • Rufous     Reddish brown.
  • Rump     Lower back.
  • Scalloped     Curved markings on edges of feathers.
  • Scapulars     Feathers along edge of mantle.
  • Secondaries     Inner wing feathers.
  • Speculum     Area of colour on secondary feathers of wings.
  • Streamers     Long extensions to feathers, usually of tail.
  • Sub-species     Distinct form that does not have specific status.
  • Sub-terminal band     Broad band on outer part of feather.
  • Supercilia     Plural of supercilium.
  • Supercilium     Streak above eye.
  • Terminal band     Broad band on tip of feather or tail.
  • Terrestrial     Ground living.
  • Tertials     Innermost wing coverts, often covering secondaries.
  • Trailing edge     Rear edge of wing.
  • Vagrant     Accidental, irregular
  • Vent     Undertail area.
  • Vermiculations     Wavy (worm-like) markings.
  • Vinaceous     Red wine coloured. Warm pink.
  • Waders     Shorebirds. Usually, the smaller, long-legged waterbirds.
  • Wattle Bare skin, often coloured, on part of head.
  • Wildfowl     Ducks and geese.
  • Wing-span     Length from one wing tip to the other when fully extended.

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