Bulletin of The British Ornithologists' Club 2010 130(4):286-301
47499910

A new taxon of Collared Petrel Pterodroma brevipes from the Banks Islands, Vanuatu

Vincent Bretagnolle, Hadoram Shirihai
Vincent
Bretagnolle
&
Hadoram
Shirihai
289
Bull.
B.O.C.
2010
130(4)
TABLE
1
Morphometries
of
Pterodroma
brevipes
magnificens,
other
populations
of
Collared
Petrel
P.
brevipes
and
Gould's
Petrel
P.
leucoptera.
Mean
is
given,
followed
by
standard
deviation
and
range.
Details
of
measured
specimens
are
presented
in
Appendix
1.
A
total
of
120
specimens
(all
adults)
were
measured
by
VB.
Specimens
from
the
Banks
Islands
(n=6)
were
compared
to
other
P.
brevipes:
we
used
both
parametric
(ANOVA)
and
non-parametric
(Kruskal-Wallis)
tests,
because
of
reduced
sample
size.
Significant
tests
appear
in
bold.
N
Wing
Tail
Culmen
Bill
depth
Bill
width
Tarsus
P
hrP7iiYiPG
inncrnifirpYiQ
1
.
Ul
CUlyL!?
(
I
flfV
/
I
I
}
tLC
/
iJ
97.5
±
4.6
22.9
±
1.1
7.8
±
0.5
9.8
+
0.4
26.2
+
1.2
(Banks
Islands,
Vanuatu)
(206-222)
(89-102)
(21.5-24.6)
(7.1-8.3)
(9.5-10.4)
(25.3-27.8)
AMNH
916993
I
224
107
24.0
7.4
y
.yj
97
5
(Banks
Islands,
Vanuatu)
P.
brevipes
16
216.9
±
5.1
98.8
±
4.3
24.3
±
0.9
8.1
±
0.5
10.5
±
0.9
27.9
±
1.6
(south
Vanuatu)
(208-224)
(92-108)
(22.6-25.7)
(7.5-9.4)
(9.4-12.4)
(26.2-29.8)
P.
brevipes
1
7
1/
Z.W.D
±
D.U
70.7
±
4.0
Z4.U
±
try
/.o
±
(J.o
V.D
±
U./
07
/I
_i_
1
1
Z/.4
±
1.1
(Fiji)
(203-226)
(86-103)
(21.8-25.4)
(7.4-8.5)
(7.3-10.5)
(25.2-29.4)
P.
leucoptera
caledonica
16
222.3
±
6.5
88.8
±
6.1
25.6
±
0.9
8.8
±
0.4
10.4
±
0.6
30.5
±
1.3
(New
Caledonia)
211-234)
(79-99)
(23.1-26.8)
(8.2-9.4)
(9.4-11.9)
(28.1-32.5)
P.
/.
leucoptera
64
223.6
±
4.7
96.3
±
4.7
24.8
±
0.8
9.2
±
0.5
11.5
±0.6
30.2
±
1.4
(Cabbage
Tree
Islands)
(213-233)
(85-112)
(22.7-27.1)
(8.4-10.8)
(10.3-13.0)
(27.7-34.2)
Comparison
between
P.
b.
magnificens
and
other
P.
brevipes
ANOVA
F
{p)
39
7.74
(0.008)
0.03
(0.87)
7.91
(0.008)
1.17
(0.29)
0.44
(0.51)
9.78
(0.003)
Kruskal-Wallis
X
2
(p)
39
5.77
(0.02)
0.003
(0.95)
5.72
(0.02)
0.72
(0.4)
0.64
(0.42)
5.22
(0.02)
maxillary
unguis
to
base
of
mandibular
unguis)
7.6
mm;
tarsus
27.6
mm.
AMNH
216921:
wing
206.0
mm;
tail
89.0
mm;
culmen
23.0
mm;
bill
depth
7.1
mm;
tarsus
25.25
mm.
AMNH
216920:
wing
212.0
mm;
tail
101.0
mm;
culmen
24.6
mm;
bill
depth
8.3
mm;
tarsus
25.4
mm.
AMNH
222193:
wing
217.0
mm;
tail
97.0
mm;
culmen
22.0
mm;
bill
depth
8.1
mm;
tarsus
25.8
mm.
All
sexual
organs
described
as
'nesting'
or
'enlarged'.
Another
specimen,
AMNH
216922,
could
not
be
located
during
HS's
visit
in
2010:
measurements
were
made
by
VB
in
1997:
wing
222.0
mm;
tail
102.0
mm;
culmen
23.4
mm;
bill
depth
7.4
mm;
tarsus
25.3
mm.
Description
of
the
holotype.
(see
Fig.
2).
Lower
half
of
forehead
to
feathers
around
bill,
front
three-quarters
of
lores,
and
lower
ear-coverts,
chin
and
throat
(almost
to
upper
breast)
pure
white
1
,
forming
solid
white
face
that
contrasts
markedly
with
the
rest
of
overall
very
dark
plumage.
Forehead
mottled
extensively
with
dark
brown
2
feather
tips,
while
white
area
of
lower
ear-coverts
also
unclean
(slightly
dappled
with
small
dark
3
spots).
Border
between
white
throat
and
dark
grey
breast
rather
clear
but
some
very
fine
paler
grey
4
feather
tips
punctuate
lower
throat
/
upper
breast
border,
forming
mottling
effect.
From
upper
forehead
there
is
a
short
whitish''
supercilium
(spotted
and
poorly
defined)
Colour
code
footnotes:
colour
of
type
(AMNH
216919)
measured
directly
against
RAL
Classic
Kl
colour
book
(02RALK1)
and
photos
of
the
type
also
white-balanced
and
measured
digitally
by
ColorSchemer
Studio
2
(=CSS)
scale
software:
1
RAL
9010/Pure
white
=
CSS
f9fafc
(in
parts
unclean,
forming
RAL
9001
/Cream
&
9002/Grey
white,
or
CSS
e2e5d4
&
cac8bb,
respectively).
2
RAL
8019/Grey
brown
=
CSS
47444b.
3
RAL
7022/Umbra
grey
&
7021
/Black
grey
=
CSS
5f677c
&
3d3b3c.
4
RAL
7030/Stone
grey
&
7012/Basalt
grey
=
CSS
9d9789
&
605c6a.
5
RAL
9010/Pure
white
=
CSS
f9fafc
(in
parts
spotted
with
RAL
7022/Umbra
grey
&
7021
/Black
grey
=
CSS
5f677c
&
3d3b3c).