Larks dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Internet Archive - Anonymous

It is one of the best omens possible to hear a bird singing happily; it is Nature in her kindest mood. But if the songster is shut up in a cage, then your own greed will cause the failure of your plans.
Source: Mystic Dream Book Author: Internet Archive - Anonymous

Interpretation 2 — Stephen Girard

To dream of hearing a lark, denotes cheerfulness, health from good habits, riches by industry, and happy wedded life.
Source: The Mystic Dream Book Author: Stephen Girard