80 Survival and dispersal in a new Barnacle Goose population
©Wildfowl & Wetlands Trust
Wildfowl
(2013) 63: 72–89
Table 3.
Annual survival rates for Barnacle Geese breeding in two distinct breeding areas (the Delta area and Fryslân) in the
Netherlands, from mid-winter/spring 2004 onwards. Parameter estimates are from the best models for both study areas. Re-sighting
rate = the overall re-sighting rate for colour-marked geese; reporting rate = the probability that a colour-mark is found and reported,
given that the bird has died.
Survival
Delta area
Jan Durkspolder, Fryslân
interval (years)
Estimate
s.e.
Lower C.I. Upper C.I.
Estimate
s.e.
Lower C.I. Upper C.I.
2004–2005
0.985
0.007
0.961
0.994
–
2005–2006
0.944
0.012
0.916
0.963
–
2006–2007
0.934
0.013
0.902
0.956
–
2007–2008
0.914
0.014
0.882
0.938
–
2008–2009
0.894
0.014
0.864
0.918
–
2009–2010
0.827
0.018
0.790
0.859
0.900
0.088
0.570
0.984
2010–2011
0.849
0.020
0.805
0.884
0.838
0.124
0.464
0.969
2011–2012
0.689
0.034
0.618
0.752
0.614
0.137
0.339
0.832
Re-sighting rate
0.923
0.794
0.069
0.627
0.899
Reporting rate
0.174
–
