… the vital relationship between native plants and the birds … birds provide important services for native plants, such as pollination … diet when breeding in Canada and the northernmost parts … spatterdock can choke out other native vegetation in some regions, …… the vital relationship between native plants and the birds … birds provide important services for native plants, such as pollination … diet when breeding in Canada and the northernmost parts … spatterdock can choke out other native vegetation in some regions, …