The collection

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A mud-legged glossy ibis in low sunlight, 1769, hard outline with a soft interior, aquatint on dampened rag. Work 8499.
Mezzotint over an etched foundation of a dunlin flock turning as one in 1838, half-tone on coated paper. Work 7251.
A greenshank at the edge of a pool between two dead pine trunks in 1785, counterproof taken from a damp print. Work 7241.