This book based on the personal memories of Juan del Junco, as is most of his work, was published to coincide with the exhibition of the Fifth Pilar Citoler International Photography Prize and the solo show by artist Juan del Junco (Jerez de la Frontera, 1972), winner of the 2009 edition. He is the son of an architect/ornithologist, and if we observe the images that illustrate some of the pages of this monograph, which are from his family album, we see they respond to an interest in analysing reality based on a scientific method. The book unites various series. In El sueño del ornitólogo we begin to reliably confirm the relationships established between that "photograph box" and the Jerez photographer´s artistic work. Research in the holdings of the Doñana Biological Station provided the material needed to compose an exhaustive inventory of birds based on taxonomic criteria. In turn, Sema D´Acosta reviews in eight chapters the trajectory of Juan del Junco´s work from his early series such as De la memoria al artista to what is more recent such as Lugares que encontré en un listado científico, which is still in progress.