[1] Belding's yellowthroat (Geothlypis beldingi ) was named in his honor by Robert Ridgway.

Belding's orange-throated whiptail (Aspidoscelis hyperythrus beldingi), a subspecies of lizard, was named in his honour by Leonhard Stejneger.

[2] In addition to his work as a self-taught ornithologist, Belding made a contribution to Baja California anthropology.

[3] In 1882–1883, he joined with the Dutch anthropologist Herman ten Kate in exploring the Cape Region at the peninsula's southern extremity.

In 1885, Belding published an article describing their largely unsuccessful efforts at locating descendants of the region's native Pericú inhabitants and their more successful discoveries of caves containing distinctive secondary, painted burials.