From: Parental care, loss of paternity and circulating levels of testosterone and corticosterone in a socially monogamous song bird
Observation dates
Year
Brood no.
No. of nests observed
19-May/29-May
2010
1st
8
15-Jun/29-Jul
2nd
35
11-May/9-Jun
2011
13
15-Jun/28-Jul
18