Since ancient times, because of the Birds connection to the sky, they have been thought of as a supernatural link between the heavens and the earth.

Lark
The lark is a very popular animal, appearing in literature, song, mythology, and even religion. Though we write of the lark very often, the only true North American lark is the horned lark, which is named for its black stripes beneath its eyes. The meadowlark also inhabits North America, though technically, the meadowlark is more closely related to the starling. This doesn't stop us from relating the meadowlark to the true lark, however.

Larks are known for their melodious singing. They also sing while they are flying, unlike most other birds, who only sing when perched. This indicates cheerfulness and reminds us to find joy in our own lives. Larks are also very good mimics of other birds' songs. Perhaps this tunefulness is the reason that larks are messengers in religion and mythology. In Lakota/Dakota myth, larks were the messengers of the god Itokaga (Okaga). Itokaga was the representation of the south wind. South is the direction of the sun and the bringer of warmth, light, and life. Therefore the meadowlark is associated with all of these things, in addition to women's medicine, which encompasses beauty, fidelity, happy marriage, and fertility. Seeing a meadowlark is good news for the viewer, because the lark brings abundance and impending harvest.

Larks have a crescent shape across their breasts. The crescent shape often signifies lunar qualities, and the moon is often linked with the concept of self. Therefore the lark reflects the inward journey that's often associated with self-discovery. This goes hand in hand with their singing, something that, for humans, is often considered a private activity and a deep reflection of inner self. Lark encourages us to explore our inner selves and sing out loud.

Owl
Through folklore, we all associate owls with wisdom at some time or other. Rather than intellectual wisdom, though, owls are connected with the wisdom of the soul. However, there are other qualities that owl has. Owls are often seen as mysterious, mostly because many owls are strictly nocturnal and humans have always found night to be full of mystery and the unknown. Owls live within the darkness, which includes magic, mystery, and ancient knowledge. Related to the night is the moon, which owls are also connected to. It becomes a symbol of the feminine and fertility, with the moon's cycles of renewal.
Even the mythology relates owl to this wisdom and femininity. The owl was a symbol for Athena, goddess of wisdom and strategy, before the Greeks gave their pantheon human forms. According to myth, an owl sat on Athena's blind side, so that she could see the whole truth. In Ancient Greece, the owl was a symbol of a higher wisdom, and it was also a guardian of the Acropolis. Diana, the Roman response to Athena, was strongly associated with the moon, and also the owl. The Pawnee and the Sioux saw the owl as a messenger (akicita) to the first of all evil creatures (Unktehi). While the Lakota tribe had an "Owl Society," where the warriors fought primarily at night and painted dark rings around their eyes because they believed that would allow them to have an owl's acute vision. There are many superstitions surrounding the owl, many of which focus on death. In Europe and America, owl was seen as a harbinger of death. This was due to certain peoples, like the Dakota, and some Germanic tribes and Scandinavian Vikings, who would signal the approach of attack with the hoot of an owl. This was and still remains the easiest bird call to imitate. The Mayans called the screech owl of the Yucatan "the moan bird," and believed that it meant death. There are myths and legends from all over the world, from the Americas to the Far East. Owls, as they always have, continue to be a source of wisdom, spiritual and intellectual.

Nightingale
The Nightingale is a symbol of love and longing
The Nightingale with its beautiful night song, is the bird of love, for as long as it sings, the dark night shelters secret lovers from the eyes of those who may part them.
Because it sings all night long, the Nightingale was once believed to be free of the need to sleep. One legend, tells of a fickle shepherdess who kept postponing her wedding date. This habit caused such distress and sleeplessness to her fiancee that he finally turned her into a nightingale and cursed her with the same insomnia which her delays had caused him.
It was thought that if the Nightingale's eyes and heart were hidden in a drink, the one who drank it would soon die of sleeplessness.
The Nightingale's song is revered around the world and is considered a good omen to poets, writers, and singers. Eating its heart was once considered an aid to sing, write, or speak beautifully.
As parents, the Nightingale is credited with teaching their offspring to sing with perfection; therefore, they are often symbols of education and good teachers.
Christians considered the Nightingale's song, a plea for help from the lost souls trapped in Purgatory; it was a cry of longing for one's heavenly home; or an omen of death.
The Nightingale is the Bird of the month of May.