Feathered frolics, webcam landscapes and The Hay Wain – the week in art

Tate Modern hosts a major exhibition of Ana Mendieta, Constable turns 250 and the accidental beauty captured by unattended online cameras – all in your weekly dispatch Ana Mendieta Neolithic monuments inspired this Cuban-born American artist to create her ephemeral, raw, poetic works that embrace nature in a truly original way. Tate Modern, London, from 15 July to 17 January The Hay WainJohn Constable’s pastoral masterpiece comes home to Suffolk in his 250th birthday year and looks more magical than ever. Christchurch Mansion, Ipswich, until 4 October Madelon VriesendorpSurreal, playful art that should fit perfectly in Soane’s mind-bending collection and hall of mirrors of a home. Sir John Soane’s Museum, London, 15 July to 20 September John KayCaricatures by this Georgian artist of geologists, booksellers and more bring Enlightenment Edinburgh to life. Scottish National Gallery, Edinburgh, until 6 December Jasper MarsalisImages taken by unattended internet cameras at global beauty spots offer a contemporary update of the picturesque. Chisenhale Gallery, London, until 6 September When he wasn’t throwing cats or melting clocks, Salvador Dalí took time out in 1922 to prono