Prior to the publication of the "Wall Street Journal" article, Canadian ornithologist Jason Rogers also wrote about the environmental problems associated with the use of bird feeders in the journal "Alberta Naturalist". In this article, Rogers explains how the use of bird feeders is inherently fraught with negative impacts and risks such as fostering dependency, altering natural distribution, density, and migration patterns, interfering with ecological processes, causing malnutrition, facilitating the spread of disease, and increasing the risk of death from cats, pesticides, hitting windows, and other causes.