Chapman promoted the integration of photography into ornithology, especially in his book Bird Studies With a Camera,[4] in which he discussed the practicability of the photographic blind and in 1901 invented his own more portable version of a blind using an umbrella with a large 'skirt' to conceal the photographer that could be bundled into a small pack for transport along with the other, at the time very bulky, paraphernalia of the camera gear.

[11] A resurgence of interest in Colombian aviary biodiversity, fueled by concerns of deforestation and changes in climates, led to more surveys in the 1990s and 2010s.

[13] The goals of this project according to its website is “to document the current status and past changes of bird assemblages and their habitats throughout the country, and to establish a quantitative, publicly-available database for future assessments and monitoring”.

[13]  The surveys carried out in this project have expanded upon the methodology of studies from the 2010s, incorporating citizen training and citizen-led data collection.

[15] This project was reportedly inspired by the team member's rediscovery of Elizabeth Kerr's contributions to Chapman's and the American Museum of Natural History’s collections.