Table 1.

Number of offspring (n) marked in each year of the study and the maximum number of months that individuals from each cohort were monitored. (The number of months monitored represents a maximum because some individuals from each cohort died or disappeared before the endpoint of the study.)

year	n	months monitored
2004	35	50
2005	63	38
2006	73	26
2007	81	14
2008	60	2