Pokepark (ポケパーク) Eggs: Featherdance Taillow .

In the year 2005, various Pokémon were distributed as eggs with special moves, where in that particular generation or games, they normally have no access to those moves.
Players could receive the wonder card at the PokéPark in Japan via the NDS Download Play feature, receivable by all the Generation III games.
(Though required them to play the games on a NDS)

Additionally, players that had the GBA Wireless Adapter and the respective games (FireRed, LeafGreen and Emerald),
could receive the gift on their GBA using the Mystery Gift and Wireless Adapter capabilities to connect to a JOYSPOT,
at the Market Fantasia.

The distribution ran from March 12 to May 8, 2005.