19th century birds painted by Danish artist Niels Peter Rasmussen. Living from 1847 to 1918, he also painted portraits and flowers.

Pigeon. February 3, 1907. Danish. oil on canvas. Niels Peter Rasmussen, painter (1847-1918). Date and monogram Søndag (Sunday) 3. Febr. 1907 “NPR” on the upper left. Image source bruun-rasmussen.dk. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Niels_Peter_Rasmussen_-Due-_1907.png



 Gravand liggende i græsset.. July 12, 1906. Danish. Oil on cardboard. Niels Peter Rasmussen, painter (1847-1918). Inscribed with a monogram, location and date NPR” Viborg 12 Juli 1906 on the lower right. Image source bruun-rasmussen.dk. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Niels_Peter_Rasmussen_-Gravand_liggende_i_gr%C3%A6sset-_1906.png

Skægmejse siddende på en kvist. May 20m 1916. Danish. Oil on cardboard. Niels Peter Rasmussen, painter (1847-1918). Inscribed with a monogram and the date on the bottom left: “NPR” 20 Mai 1916. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Niels_Peter_Rasmussen_-_Sk%C3%A6gmejse_siddende_p%C3%A5_en_kvist.png

Tre gråspurve venter på edderkoppen. December, 1902. Oil on canvas. . Niels Peter Rasmussen, painter (1847-1918). Monogram and date bottom right: “NPR” Decb 1902. Image source bruun-rasmussen.dk. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Niels_Peter_Rasmussen_-Tre_gr%C3%A5spurve_venter_p%C3%A5_edderkoppen-_1902.png