Table 1.

Population trends in relation to DD₀Yr (regression coefficient of DD₀ at MAD on year). The effects of DD₀Yr on population trends are obtained from a model including a binary factor migration strategy but excluding the effect of the non-significant interaction. Full models are reported in electronic supplementary material, tables S1 and S2. Finland DD₀Yr data were averaged between Hanko and Jurmo. Population trends for the seven countries and for Finland (a) are derived from BirdLife International [34]. Population trends used in model Finland (b) are derived from Väisänen [35]. The number of short-distance or long-distance migrants for which population trend data were available was 70 and 42 for the seven countries, 65 and 39 for Finland (a), and 35 and 27 for Finland (b).

	t	d.f.	p	estimate
species-specific data
seven countries	−2.30	109	0.023	−0.222(0.097)
Finland (a)	−2.39	101	0.019	−0.379(0.159)
Finland (b)	−2.53	59	0.014	−0.654(0.258)
independent contrasts
seven countries	−2.72	106	0.008	−0.221(0.081)
Finland (a)	−3.13	98	0.002	−0.458(0.146)
Finland (b)	−2.90	58	0.005	−0.753(0.259)