Byrdmaniax
Release history

Date
Label
Format
Country
Catalog
Notes
June 23, 1971
Columbia
LP
US
KC 30640
Original release.
August 6, 1971
CBS
LP
UK
S 64389
Original release.
1971
CBS Sony
LP
Japan
SOPL-34001
Quadraphonic LP release.
1992
Line
CD
Germany
900930
Original CD release.
1993
Columbia
CD
US
CK 30640
-
1993
Columbia
CD
UK
COL 468429
-
February 22, 2000
Columbia/Legacy
CD
US
CK 65848
Reissue containing three bonus tracks and the remastered album.
February 22, 2000
Columbia/Legacy
CD
UK
COL 495079
Reissue containing three bonus tracks and the remastered album.
2003
Sony
CD
Japan
MHCP-105
Reissue containing three bonus tracks and the remastered album in a replica gatefold LP sleeve.

Question: When was Byrdmaniax released both in the US and in the UK?
Answer: Byrdmaniax was released on June 23, 1971 in the United States (catalogue item KC 30640) and August 6, 1971 in the United Kingdom (catalogue item S 64389).