Found on EQD!
https://www.equestriadaily.com/2018/09/radio-play-birds-of-feather.html

Ah! It's finally here! I'm so happy to finally get this out! And yes, this will be split up into 3 episodes because it's longer than I expected it to be xD. But thank you all for your patience and love! Hope you enjoy!

CAST (in order of appearance)
-----------------------------------------------
Pinkie Pie: Fluttershyfilly Yay https://www.youtube.com/channel/UC_pK6RiAOL8LIwz7WhVOd1Q
Gilda Present Day: Flurry Palette https://www.youtube.com/channel/UC-3PXUfQyUqr4NsF-B2j88w
Hoops: Trail Grazer https://www.youtube.com/channel/UCuk1s1ydqSQ5UK_Y3Gbq-hQ
Rainbow Dash Age 5: Lillie Song
Gilda Age 5: TheFanficFanPony https://www.youtube.com/channel/UCpaHfi06tg73idA5qEl6mXQ
Rainbow Dash Age 9: Warriorcatcloudtail5 (BasicallyBB) https://www.youtube.com/channel/UCRWHtSgH9IQ1GUTeMK6LzTw
Gilda Age 9: CinnamonRollyPollie https://www.youtube.com/channel/UC-j_92qaYmz_UIkSPclvpSA
Summer Breeze: CharponyVA https://www.youtube.com/channel/UCPHYEXvKrYsPdEWXM8j2IEw
Young Spitfire: Sapphire Rose https://www.youtube.com/channel/UC-SI49N9ms0qxGcJpRTAJPA/featured
Uncle Flare Feather: Loyalty Streak https://www.youtube.com/channel/UCqynM3kQkupk4E6FSDPM4RA
Hippie Ponies: Nightwolf, Trail Grazer & DoNd0
Announcer Pony: Connor Worby https://www.youtube.com/channel/UCaoypuPYm-liI39ovVENRQg
Nana Charity Valentine: Ice Storm https://www.youtube.com/channel/UCxROFx88qh8y4TXDyD4DFyQ
Doctor: Lead Bread https://www.youtube.com/channel/UC7V6MapyL8YJ6o9vG0w7hDw
Young Rara: Sugar Lemon
Young AppleJack: Blue https://www.youtube.com/channel/UCKX2UZG3iAwLDxkYtyn7btA
Gilda Age 13: Elly Park https://www.youtube.com/channel/UCBLydGSgte0anLEgWcKXw2g
Rainbow Dash Age 13: thelifeofcloud9 https://www.youtube.com/channel/UC59K4CVOuB3PNz-tXnx9Q_g

ARTISTS
--------------
Scene 1: KateWeatherMachine2 https://www.deviantart.com/kateweathermachine2
Scene 2: Sketch the Pegasus https://www.deviantart.com/sketchybum-tay?rnrd=228513
Scene 3: Shyheart w https://www.youtube.com/channel/UCCjV2eO8BDwRWUx9DhWZCJw
Bravest Individual Animatic: Katie Sparkles https://www.deviantart.com/katelove77
Scene 3 Pt 2: MysterysChannel https://www.deviantart.com/mysteryschannel
Scene 4: Wild Heart
https://www.deviantart.com/wildheart2001
Scene 5: PinDolphin https://www.youtube.com/channel/UC8-KTwRMEHE5uOMUw_8nvfQ
When I Seize the Day: Equestrian Sketcher https://www.deviantart.com/jenstercreations?rnrd=249188
Scene 6: Aspen Breeze https://www.youtube.com/channel/UCfodKf5QoTJILWrbtTNODFQ
Scene 6 Pt 2: thelifeoncloud9 https://www.deviantart.com/thelifeoncl0ud9
Don't Forget Me: Fluttershy1124
https://www.deviantart.com/fluttershy1124
Scene 6 Pt 3: Princess Crystal Moonbeam
Scene 7: TheRainbowGod https://www.deviantart.com/therainbowgod
Scene 8: KateWeatherMachine2 & Harmony Fawn https://www.deviantart.com/harmonyfawn
Good Enough: MLPChocolateRain https://www.deviantart.com/mlpchocolaterain