Average daily temperature (A), rainfall (B), and number of fledglings produced per egg laid (C) during May of the ten years preceding the study (2001–2010, open circles) and May of the year of the study (2011; filled circle).

<p>Average daily temperature (A), rainfall (B), and number of fledglings produced per egg laid (C) during May of the ten years preceding the study (2001–2010, open circles) and May of the year of the study (2011; filled circle).