He was the first to discover the pattern of wing taxis, the absence (diastataxis) or presence (eutaxy) of the fifth secondary in birds.
[1] He was co-author of Ornithologie européenne, ou Catalogue analytique et raisonné des oiseaux observés en Europe with countryman Côme-Damien Degland (second edition, 1867).
[2][3] He also published a French translation of Alfred Brehm's Illustrirtes Thierleben with the title La vie des animaux illustrée : description populaire du règne animal (4 volumes).
[4] Species he described include Gerbe's vole.
This article about a French biologist is a stub.