Crimson Sunbird is a Winged Beast Fusion Monster with Attribute FIRE, Level 6, ATK 2300, DEF 1800.
Fusion Summons typically need listed materials and a Fusion method (Polymerization, contact, etc.).
On the current TCG and OCG Forbidden & Limited lists tracked here, Crimson Sunbird is Unlimited.
YGOPRODeck lists Crimson Sunbird for these formats: OCG GOAT, Duel Links, Common Charity, TCG, OCG, Master Duel.
A listed print of Crimson Sunbird appears in Cosmo Blazer (CBLZ-EN090) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Crimson Sunbird is about $0.12 on TCGPlayer (prices change frequently).
