Habitat use and population dynamics of the Azure-Winged Magpie ...

Proportion (%) of individuals
80
70
60
50
40
30
20
10
0
Unsuccessful breeders 2008 Unsuccessful breeders 2009
Figure 3.20 Proportion of unsuccessful breeders from the years 2008 and 2009 that were present,
that bred, and successfully raised chicks in the subsequent year. There were no
recorded unsuccessful breeders in 2007.
3.3.7 Change in group membership
From 2007-2009, birds were observed breeding only in the Main Breeding Area (see Habitat
Description, this section). In the 2010 (one year post-fire) breeding season, there were three nests
built (I suspect one was a re-nesting event) in patches of Padus asiatica (Padus Patch area) on the
true left of the river, about 2km upriver from the field station. This was the first time C. cyanus
was recorded breeding in Padus Patch area. This was also the first time some members of the
colony nested far apart from other members.
Out of the three banded adults that bred in the Padus Patch in 2010, one male adult (banded in
2008) successfully fledged chicks in 2009 and 2008; one female (banded in 2009) either bred or
helped in 2009; the other female (banded in 2007) wasn’t observed in 2009, bred in 2008 but
didn’t fledged any chicks, bred in 2007 and successfully fledged chicks.
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Present the
subsequent year
Present and bred the
subsequent year
Present and bred
successfully the
subsequent year