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Figure 2


Fig. 2. Body mass increase (circles) from day 1, and daily food intake (mean ± s.e.m.; triangles) for the early season (A) and late season (B) replicates in all three years (2000, 2001 and 2004). Experimental birds receiving a magnetic treatment (single-step or multiple changes in magnetic field value) are represented by open symbols; control birds are represented by filled symbols.