We also give a general overview of the worldwide distribution of the species. All species are drawn uniquely for the book. The facing page presents, for each species, the frequency distribution of the species during the four seasons, the limits of which are based upon the unique biology of the species. Only one scale for the density classes was used for all seasons within any species, but the scale vary between species to account for different densities between species. Several tables for all species are provided, as well as transparents for the major maps used to explain the distributions.
Conservation issues are thus to be looked at in a different way.
Although the book is in French, the English and scientific names of the birds are given, the maps are readable by all as well as the many tables. Plans for the future Use the POQ data to produce other atlases as time and funding is available to compare changes in the distribution of the avifauna for Quebec, both for Summer or any season or time frame, per decade or other duration. Data are already available for more than two consecutive decades. Data go back to the early 50s, but the coverage is less complete between 1950 and 1968. Current work involves analysing long term trends in bird population of all species, covering at least 24 years.