Table 1.

Coefficients of models investigating within-individual change in Haematopus ostralegus nest elevation over time (cm ± s.e.). Models include Time, standard deviation of elevations within territories (σE) and egg laying date (LayDate). All models within the 95% confidence set are displayed plus the null model; for full model selection results see electronic supplementary material, table S2. Post hoc analysis includes a categorical term to account for the presence of an artificial sea wall (Seawall). Nests with a sea wall are used as the reference category. k denotes the number of parameters estimated in each model; w_i denotes AICc model weights.

ΔAICc	wi	k	intercept	time (years)	σE (cm)	time * σE
0.00	0.91	4	79.56 (±4.33)	0.38 (±0.16)	0.06 (±0.02)	0.01 (±0.03e−1)
5.91	0.05	2	79.58 (±4.37)	0.32 (±0.16)	—	—
6.09	0.04	1	79.52 (±4.38)	—	—	—
Post hoc comparison

ΔAICc	wi	k	intercept	time (years)	σE (cm)	time * σE	seawall	time * seawall
0.00	0.99	4	81.75 (±9.51)	1.66 (±0.40)	—	—	−2.41 (±10.80)	−1.59 (±0.43)
10.20	0.01	4	79.56 (±4.33)	0.38 (±0.16)	0.06 (±0.02)	0.01 (±0.03e−1)	—	—
16.29	0.00	1	79.52 (±4.38)	—	—	—	—	—