Robert Hainard
Nette rousse (croquis)
Switzerland, 1983

Robert Hainard
Plongeon arctique à contre-jour (croquis)
Switzerland, 1982

Robert Hainard
Triple combat de foulques (croquis)
Switzerland, 1980

Robert Hainard
Cygne de Bewick (croquis)
Switzerland, 1980

Robert Hainard
Foulque et poussins (croquis)
Switzerland, 1973

Robert Hainard
Parnassies (croquis)
Switzerland, 1970

Robert Hainard
La reine-des-prés (croquis)
Switzerland, 1959

Robert Hainard
Râle d'eau (croquis)
France, 1948

Robert Hainard
Deux castagneux (croquis)
France, 1948

Robert Hainard
Perce-neige (croquis)
France, 1946

Germaine Hainard-Roten
Le bois gentil, Jura
Switzerland, 1973

Germaine Hainard-Roten
Chevaux, Marais du Guadalquivir
Spain, 1969