Rooster other calls as well, and can cluck, similar to the hen. Roosters occasionally make a patterned series of clucks to attract hens to a source of food, the same way a mother hen does for her chicks. Rooster crowing contests are a traditional sport in several countries, such as Germany, the Netherlands, Belgium, the United States, Indonesia and Japan. The oldest contests are held with longcrowers. Depending on the breed, either the duration of the crowing or the times the rooster crows within a certain time is measured. A capon is a castrated rooster. In the caponization procedure, the bird's
Canonical S-expressions csexp structure does not care what structure is being parsed. Once a wire-format expression has been parsed into an internal tree form (similar to XML's DOM), the consumer of that structure can examine it for conformance to what was expected. As noted above, an XML document without a schema works just like csexp in this respect, while an XML document with them can work more like ASN.1. Canonical S-expressions A Canonical S-expression (or csexp) is a binary encoding form of a subset of general S-expression (or sexp). It was designed for use in SPKI to retain the power of S-expressions