Black-backed woodpecker Picoides arcticus
Area|--------1966-1994 trends--------| |--1966-1979---||--1980-1994---|
Trend P N ( 95% CI ) R.A. Trend P N Trend P N
S28 8.0 *** 23 5.8 10.2 0.06 50.9 *** 4 -11.3 *** 19
S29 -8.8 14 -27.3 9.8 0.12 -13.1 * 5 -13.5 * 10
EA -0.8 38 -12.1 10.6 0.10 -1.4 10 -12.1 *** 30
WE 7.3 15 -1.9 16.4 0.06 1.9 4 19.9 * 13
US 8.9 ** 23 0.3 17.5 0.09 2.0 5 21.2 * 21
CAN -1.8 30 -14.2 10.5 0.08 -1.0 9 -13.9 *** 22
SUR 0.8 53 -7.8 9.4 0.08 -1.0 14 -8.1 ** 43
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