The marsh was included in bird breeding habitat studies in 1986--1987 and again in 2005, revealing that diversity of bird species is rapidly decreasing as the red-winged blackbird becomes dominant.
The marsh was included in bird breeding habitat studies in 1986--1987 and again in 2005. Diversity of bird species is rapidly decreasing as the red. This was what 1987 was revealing. Winged blackbird becomes dominant.