Murkrow had increased spawn rates in the wild and from Incense, Lure Modules:
Banners for in-game news changed during the event, portraying the Pokémon as 8-bit sprites.
Pokémon 8-bit sprites
The sprites were available for the Pokémon in regions released by the time of the event: Kanto, Johto and Hoenn. Smeargle and Celebi from Johto, Nincada family, Spinda, Kecleon, Clamperl family, the Legendary Titans, Jirachi, and Deoxys from Hoenn had not been released by the time of the event, and their sprites are not available. Furthermore, shiny sprites and event sprites were not available.