The Griffin-Nests of Halvoran Crag

High on Halvoran Crag, the griffins of the eastern peaks lay their clutches in nests of iron-bark and stolen spearshafts. The Talonward Company pays well for an accurate count of eggs, and each nest a climber reaches must be marked with a painted tag before the mother returns.

Write nestTag(name, eggs), which builds the tag for one nest.

• name is a string: the name of the griffin that guards the nest. Use it exactly as given.
• eggs is a non-negative integer: the number of eggs in the nest.

Return a string in exactly one of these three forms, with a single space after the colon:

• If eggs is 0: <name>: no eggs
• If eggs is 1: <name>: 1 egg
• Otherwise: <name>: <eggs> eggs, with the number written in ordinary digits.

Only the exact value 1 uses the singular word egg. Every other count above zero uses eggs.