The 3rd & Bird theme song is a song heard before every episode of 3rd & Bird.
- Muffin (talking)
- Rudy (whistling)
- Mr. Beakman (whistling)
- Mrs. Billingsley (whistling)
- Missy (whistling)
- Rabbit (cameo)
Samuel: (whistles) 3rd! 3rd & Bird! Where the birdies meet just above the street to sing tweedle-ee-deet!
Mr. Beakman and Mrs. Billingsley: (whistle)
Samuel: 3rd! 3rd & Bird! Where a bird or two can play peek-a-boo on the avenue!
All: On 3rd, 3rd, 3rd, 3rd & Bird!
- The theme song is altered to be a holiday-themed version in A Very Squooky Christmas!.