It wasn't any old bird book it was this one.
In March 2000, Sheikh Saud Al-Thani of Qatar purchased a copy of The Birds of America at a Christie's auction for $8.8 million, a record for any book at auction.[70]
In December 2010, The Economist magazine estimated that, adjusted for inflation, five of the ten highest prices ever paid for printed books were paid for copies of The Birds of America.[71] Of the 120 copies known to survive, only thirteen are held in private collections.[72] In March 2000, the Fox-Bute copy sold at Christie's, New York, for $8,802,500.[73][74] In December 2005, an unbound copy, the Providence Athenaeum Set,[74] sold, again at Christie's, New York, for $5.6 million.[75]
On 6 December 2010, a complete copy of the first edition was sold in London at Sotheby's for £7,321,250[76][77] during the sale of Magnificent Books, Manuscripts and Drawings from the collection of the 2nd Baron Hesketh. The winning bid was a record auction price for a printed book and was placed by London-based art dealer Michael Tollemache, who outbid three others during the auction.[77] According to the provenance details reported by the auction house, the copy's original owner was Henry Witham of Durham, listed as subscriber 11 in Audubon's Ornithological Biography; the first volume of the set bears a presentation inscription from Witham's wife, dated 24 June 1831.[76] Lord Hesketh had bought the copy from a descendant of Witham at a Christie's auction on 3 July 1951, paying £7,000.[76]