The average latency to withdrawal the foot did not differ across groups.

<p>The average bouts of Total Song in breeding nest box owners were significantly different from non-owners and non-breeding condition. A. Latency to withdrawal the foot in non-breeding condition (black bar) and breeding condition (nest box non-owners and owners, gray bars) +SEM. B. Average bouts of total song in each condition +SEM. Statistical significance is represented by lines and *** (<i>p</i><.00001). Sample sizes are indicated in the bottom of each bar.