Figure 3. Figure 3. Ranges in the density of breeding male ovenbirds. Some sites (WO, RL, JR, OG) did not vary or had breeding male(s) in only one year (WS, TP). The density of breeding male ovenbirds was significantly higher in the three large reserves than in the three small reserves (n1 = 10, n₂ = 27, U = 270, p < 0.001).