Summary of North Island Robin Breeding Season 2006 - 2007
· 6 breeding pairs were monitored in the core of the project area (one more pair than last season).
· One pair was likely to have had its first clutch before it was detected hence the additional figures in brackets.
· 12 (13) nests, 23 (25) chicks, 17 chicks banded (all banded in the nest)
· 2 (1) pair/s had 2 clutches and 3 (4) pairs had 3 clutches.
· Average chicks per female = 4.6 (5)
· Single birds still in the core: unbanded (male) at beginning of Whatitiri Track.
· Two of the three single birds from last season (male YM- and female B-M) moved into new territories this year. The remaining single bird Y - GM male has not been seen this season.
· WW-RM (juvenile from last season) was seen in R12 area by a contractor in August 2006 and heard again in October and mid November but not seen since.
Photographer: Karen Colgan
· 8 breeding pairs were monitored in the core of the project area (three more pairs than last season).
· A male bird not seen since the translocation in April 2005 was one of a new breeding pair.
· Successful breeding by an unbanded female was observed for the first time.
· 15 nests, 24 chicks, 11 chicks banded (all banded in the nest)
· 1 pair was not seen again after their first clutch and 1 male disappeared after the first clutch.
· 1 pair of unbanded birds had 5 infertile eggs in 2 nests.
· 3 pairs had 2 clutches and 1 pair had 3 clutches.
· 1 male had 11 chicks with 2 females in nearby territories.
· Average chicks per female = 3.4 (compared with 4.5 in the past but this average was mainly due to young females not being as successful as their older counterparts … yet).
· Birds still in the core of the intensive predator control: bird/s heard on R12/R13 line for 2 seasons now but not yet found. Trampers identified Y-GM (an original transfer bird), early in the season on Robinson Ridge track but no sighting since. It was not seen during the 2006-2007 season.
· 3 pairings stayed the same, 1 female GM-R paired with G-GM a single bird from last year. Her original mate GM-Y was seen early in the season.
· The pair at Ld were in a 2005-6 territory where no pair was found last year, although a single unbanded bird was sighted which is likely to be the unbanded female currently breeding in that territory.
· New territories were formed at TA/3, and L5.5.
· The breeding season was shorter than previous years - the bush became very dry in late January/February.There were less robin monitoring hours than previous years (less resources available ie. overseas student volunteers were concentrating on hihi montoring).