Angry Birds POP!/Limited Time Birds

Red
Used to be a time limited bird during the period, until he is permanently playable in "Drop the Pigs".
 * March 21, 2015 - June 3, 2015 (First time guest star)
 * October 3, 2015 - November 3, 2015 (Halloween)

The Blues
Available to play for a limited time during the period.
 * July 6, 2015 - July 20, 2015 (First time guest star)
 * June 23, 2016 - July 7, 2016 (Summer Treats)

Chuck
Used to be a time limited bird during the period, until he is permanently playable in "Piggy in the Middle".
 * 13 August, 2015 - 27 August, 2015 (First time guest star)

Shakira Bird
Available to play for a limited time during the period.
 * September 16, 2016 - September 30, 2016 (First time guest star)

Dahlia
Used to be permanently playable in the "Piggy in the Middle", until her removal in the Autumn Orchard update and available to play for a limited time during the period.
 * ??? (First time guest star)

Bomb
Available to play for a limited time during the period.
 * November 17, 2015 - December 1, 2015 (First time guest star)

Luca
Available to play for a limited time during the period.
 * January 7, 2016 - January 18, 2016 (First time guest star)
 * August 4, 2016 - August 18, 2016 (Olympig)

Matilda
Available to play for a limited time during the period.
 * Feburary 9, 2016 - Feburary 22, 2016 (First time guest star)

Hatchlings
Available to play for a limited time during the period.
 * March 31, 2016 - April 7, 2016 (First time guest star)
 * April 26, 2016 - May 26, 2016 (Movie Mania)
 * August 22, 2016 - September 1, 2016 (Freedom for Hatchlings)