A BIRD SITTING ON A PINE TRUNK China, 20th century. 69.5 × 33.5 cm. Ink and colours on paper. Hanging scroll, brocade mounting. Signature: Bada Shanren. Seal 1: Bada Shanren; Seal 2: He yuan. Label on reverse: Copy of Bada Shanren's "flowers and birds". Provenance: Collection of Czech sinologist Daniela Šejnohová (1929 - 2011).