A massive new report published this week finds that 432 of the 1,154 native bird species found in the continental United States, Canada and Mexico are “at a risk of extinction without significant action.”

The State of North America’s Birds 2016 report was published on behalf of the North American Bird Conservation Initiative, which represents the three nations. Using data collected by tens of thousands of citizen scientists and dozens of scientific organizations, it ranks each bird species in nine major habitat types for their risks of extinction. Oceanic species and those living in tropical forests were among those found to be at the greatest levels of risk, although steep declines were observed just about everywhere.

The report also gave each species a “concern score” of between 1 and 20 based on issues such as declining populations, habitat loss, oceanic pollution, invasive species and other threats. Any species that ranked 14 or higher were placed on the report’s “watch list” of species in peril, as were the species that ranked 13 but also had rapidly declining populations. The watch list includes 37 percent of the included species.

Of course, that’s far from inclusive. The report excludes the Caribbean and any Central American countries other than Mexico, as well as islands that are part of the United States but aren't in North America such as Hawaii and Guam, both of which face terrible bird extinction problems. It also doesn’t include subspecies, such as the Florida grasshopper sparrow (Ammodramus savannarum floridanus), which has declined to fewer than 150 birds. If additional areas and subspecies had been included, the percentage of threatened species may have actually been quite a bit higher.

Still, the list itself is quite sobering. And so, here it is: all 432 at-risk North American bird species, as ranked by this report’s concern level. See how many species you recognize, and how many you might mourn if they were to disappear.