The decline of that region's breeding population has therefore had major repercussions for the size of the continental breeding population, and has been compounded by declines in the smaller populations of the U.S. Prairies and Western Boreal Canada (Figure 8).
Le dÃ©clin de la population reproductrice de cette rÃ©gion a eu ainsi des rÃ©percussions majeures sur la taille de la population reproductrice continentale et a Ã©tÃ© accentuÃ© par les diminutions dans les plus petites populations des Prairies des Ã‰tats-Unis et de l'ouest de la rÃ©gion borÃ©ale du Canada (figure 8).