Sandwich Tern ( Sterna sandvicensis). One of the more inventive birders names, derived from Groucho Marx whose eyebrows and cigar are evoked in the shaggy crest and black bill of the bird.

show one's unhappiness or critical attitude; "He scolded about anything that he thought was wrong"; "We grumbled about the increased work load"

a killjoy and a sense of humour adds a warm feeling of workplace unity

to complain habitually, especially about minor or routine annoyances.

Grouch is a system for describing and enforcing a Python object schema. An object schema describes every class in a collection of objects -- in particular, it specifies the type of every instance attribute of every class.

A bad-tempered person.