On the subject of 'Bombay Duck' (which is in fact a lizard fish, but that's another story) the following bit of info is on note:
The popular instrumental rock band, The Ventures, famous for such tunes as the 1960 hit "Walk, Don't Run", "Slaughter On Tenth Avenue", among countless covers, covered their own rendition of the title "Bombay Duck", and was featured as the closing track of their 1968 album "Pops in Japan No.2". Besides The Ventures, The Shadows also released a cover of "Bombay Duck" as a single in 1967.
That came from Wikepedia.
As for the The Shads version of the tune itself (from Malcom Campbell):
"RECORDED 26 FEBRUARY
BOMBAY DUCK
This fine composition by Japanese jazz bassist Toshio Honda, which elicited a bravura performance from The Shadows, was released prior to their tour of Japan in June 1967, and was to prove a great favourite in that country"
So, was the Ventures version a cover of The Shads version, or whatever? And, a version of it was also done by Rick Wakeman too!