Fig. 4
From: Comparative egg attendance patterns of incubating polar petrels
Daily air temperatures measured by the Météo-France service at Dumont d’Urville Station, Antarctica in Dec 2013–Jan 2014. Mean values are shown in black, minimum in blue, maximum in red solid lines, and 0 °C is marked by the dotted line. The temporal period shown spans the duration when egg loggers were deployed in the nests of snow and Cape petrels. Blue symbols denote the start of an egg neglect event and red symbols indicate when incubation of unattended eggs resumed (snow petrels only)