A field mark is a characteristic (e.g. in plumage) useful for species identification, usually birds. They are often used in field guides or identification keys. In a broader context, a field mark might be referred to as a character (e.g. `differential character` or `diagnostic character`). For birds this may include plumage, flight characteris...
Found on
http://en.wikipedia.org/wiki/Field_mark
A characteristic or combination of characteristics such as colour, shape, or specific marking (eye rings, wing bars, breast stripes), by which a species of bird can be distinguished from other species Camouflage
Found on
https://www.encyclo.co.uk/local/22222
A characteristic, such as an eye ring, feather patterning, curve to the beak, or other such feature that allows one to make a fairly positive ID of an ambiguous sighting particularly when BVD and not showing well.
Found on
https://www.sciencebase.com/science-blog/birding-glossary.html
No exact match found.
