Figure 2

The daily distribution of the collared flycatcher and great tit symbol choices across the settlement period. The proportions are shown for each day when at least one pair chose their nest-site. Increasing width of a bar indicates more choices on that particular day, but the bar widths are not in the same scale in the two panels. The scale of the x-axis, day of symbol choice, refers to running day starting from the 1^st of April.