Robin breeding 2006-2007

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.

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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).

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