"The Breeding Birds of Kansas" by Richard F. Johnston is a scientific publication written in the mid-20th century. The work primarily explores the breeding habits, geographic distribution, and habitat preferences of the 176 bird species that breed in Kansas. It aims to summarize existing knowledge and identify gaps in research regarding the breeding birds of the state. At the start of the work, the author introduces the significance of studying Kansas's breeding avifauna which, despite receiving some attention, has yet to be comprehensively documented, especially concerning the temporal aspects of breeding and habitat distributions. Johnston discusses the geographical layout and ecological diversity of Kansas, highlighting its varied habitats, including woodlands, grasslands, limnic areas, and xeric scrub. The opening also sets the stage for detailed species accounts and breeding data that will follow, reflecting the extensive observational efforts undertaken by various contributors to better understand the state's avian life. (This is an automatically generated summary.)