A pupil of Largillierre, Oudry practiced all genres in painting and reached the peak of his fame during the reign of Louis XV by painting animal and hunting subjects. He was received at the Maîtrise de Saint-Luc in 1708, then at the Royal Academy in 1719, attaining the rank of professor in 1743. Oudry was appointed artistic director of the Beauvais tapestry manufactory in 1734 and inspector of the royal manufactory of the Gobelins in 1736. His two theoretical speeches, delivered at the Royal Academy of Painting and Sculpture, are today considered the only ones relating to an explicitly applied approach: On the way of studying color (June 7, 1749 ) and On the Practice of Painting (December 2, 1752). His experience gives him a critical look at the materiality of the works and encourages him to adopt a conservatory practice of painting. This study day will bring together a group of international researchers who study the painter's works and technique. In particular, she will report on the research carried out on Oudry's paintings as part of the PictOu and Rir-Peint research projects, a collaboration between the HiCSA, the C2RMF and the Musée de la Chasse et de la Nature, supported by the DIM-MAP. Ile-de-France.