Again Facebook provides nice images about everything and in this case a wonderfully decorated initial from an Italian Gradual dating 1549. Nothing more is added information-wise, however that owl was too familiar… It’s a copy in reverse after “Bubo”, the grumpy owl in Adrian Collaert’s (1560-1618) from the set “Avivm vivae”, published between 1598 and 1600. So, either the decoration was added later or the manuscript needs to be re-dated?