Fig. 2. Residual metabolic rate of nocturnal incubation (MRinc;
corrected for ambient temperature) of females incubating reduced, control or
enlarged clutches in the year 2001 (A) and control and enlarged clutches in
the year 2004 (B). The black circles represent mean values (± s.e.m.),
while the grey lines represent repeated measurements of the same
individual.