A trawl through PoW listings, using the service number written on the shed wall, shows that Pte J Bird was held at Stalag VIII-B Cieszyn (Teschen) under the name JBI Bird. His prisoner number was 82950.
National Archives at Kew hold a German Record card in the name John Basil Iuan Bird born in 1924. Unfortunately, the listing does not confirm the prisoner number and the record itself is sealed until 1st January 2025.
Research on genealogy sites brings up a birth registered in 1924 in the name John Basil Ivan Bird (I would suggest that the difference is a transcription error on the German card). He was born on 18th December and the birthwas registered at Westhampnett, Hampshire.
The 1939 Register shows him to be then living at 173 Ealing road, Wembley with his parents and siblings (again with a slight variation in the name -John IB Bird). His mother came from that area and her family owned a considerable amount of property there.
Sadly his father, who had been invalided out of the army in WW1, died on 13th August 1944 – a month after Pte Bird was taken prisoner.
John Bird married in 1945 and had at least one daughter.
Upon his mother’s death in 1961 he inherited her house in Bexhill-on-Sea, East Sussex, where he lived until his own death on the 17th of September 1976.