Sibley Birds of Land, Sea, and Sky : Clarkson Potter : 9781524761820 : 1524761826 : 01 Mar 2018 : Birdwatchers everywhere will love this beautiful box of 50 postcards featuring original bird paintings by renowned ornithologist David Sibley. This brand new vertical format offers 50 postcards of birds lovingly rendered in watercolors by David Sibley and chosen with their individual beauty and prominence in the country in mind. Housed in an elegant keepsake box with tabs dividing them by type (sea birds, birds of prey, songbirds) for ease of choice, these postcards are ideal for mailing to friends and family, framed and used as décor, or attached to presents as unique gift tags.