A picking device (1) of objects from a ground surface, comprising a roller (2) able to roll on the ground surface and comprising a plurality of radial elements (21) radially arranged about a rotation axis (X) and extending for a majority thereof parallel to the rotation axis (X) the arrangement of the radial elements (21) defines a plurality of intermediate openings extending for a majority thereof along a parallel direction to the rotation axis (X) and the radial elements (21) being configured so as to flex in such a way as to cause a dilation of the opening that is sufficient to enable passage of the objects internally of a volume delimited by a totality of the radial elements (21) and from there to inside collecting means comprising a central support body (3) that is at least partly hollow. A picking method of objects from a ground surface (100) comprises: a first step of reciprocal movement of at least a pair of radial elements (21) being a part of a roller (2) of a picking device (1) susceptible of being made to slide on the ground surface for the picking a following step of engulfing the objects internally of a volume defined externally of the plurality of radial elements (21) radially arranged about a central support element (3) and a following step of collecting the objects internally of collecting means, the collecting step comprising extraction of the objects from the volume.Linvention concerne un dispositif de collecte (1) dobjets à partir dune surface de sol, comprenant un rouleau (2) capable de rouler sur la surface de sol et comprenant une pluralité déléments radiaux (21) disposés radialement autour dun axe de rotation (X) et sétendant sur une majeure partie de ces derniers parallèlement à laxe de rotation (X) lagencement des éléments radiaux (21) définit une pluralité douvertures intermédiaires sétendant sur une majeure partie de ces dernières selon une direction parallèle à laxe de rotation (X), et les éléments radiaux (21) étant configurés de façon
