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A culmen is a top, a summit or a culminating point. It may also refer to: Culmen (bird), the upper ridge of a bird's beak; Culmen (cerebellum), a structure in the brain
Measuring the culmen. The upper margin of the beak or bill is referred to as the culmen.The measurement is taken using calipers with one jaw at the tip of the upper mandible and the other at the base of the bill (at the junction with the skull, a measurement called "total culmen") or where the feathers begin (a measurement called "exposed culmen").
The culmen is the portion of the anterior vermis adjacent to the primary fissure of cerebellum. The culmen and the anterior parts of the quadrangular lobules form the lobus culminis. Additional Images
The colour of a bird's beak results from concentrations of pigments—primarily melanins and carotenoids—in the epidermal layers, including the rhamphotheca. [39] In general, beak colour depends on a combination of the bird's hormonal state and diet. Colours are typically brightest as the breeding season approaches and palest after breeding. [40]
The beak, bill, or rostrum is an external anatomical structure found mostly in birds, but also in turtles, non-avian dinosaurs and a few mammals. A beak is used for pecking, grasping, and holding (in probing for food, eating, manipulating and carrying objects, killing prey, or fighting), preening, courtship, and feeding young.
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Beak#Culmen; This page is a redirect. The following categories are used to track and monitor this redirect: To a section: This is a redirect from a topic that does ...
Beak may also refer to: Anatomical structures. Beak (bivalve), the oldest point on a bivalve mollusc's shell; Beak (botany), a pointed projection on various plant ...