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RS Brown
1768
Hawaiian Noddy
20 Oct. Culmen measurements of different age
classes. (mm.)
SDY MDY LFY
12.4 17.9 23.1
12.5 17.5 24.6
15.8 22.5 25.5
14.4 24.4 27.4
11.0 24.7 29.0
24.3
Individual variation in bill length
possibly accounts for the overlap in
Categories MDY and LFY.
24 Oct. This was with a complete count of all nesting
areas of this species we have a total of 58
active nests, plus an additional 55 old nests.
If new nests are not constructed (or very few
of last), when a maximum population is
breeding, one hundred and 13 active nests
would be present accounting for 226 adults.
At the present time the distribution is:
High SW walls 8.6 % of breeding population.
Large Central Ledge 72.4 % "
NW circular 19.0 % "
Plus at the time of the survey, the breakdown
for breeding areas.
Eggs - 58.6 % of breeding population:
SDY 8.6 "
MDY 10.4 "
LFY 20.7 "
Eggm. 1.7
100.0%.
RS Brown
1768
Blue-grey Noddy
McLean Island
Egg measurements:
40.6 x 25.7
Culmen Measurements
17.5 LFY
17.6 LFY
15.4 MDY
24 Oct. Eggs are very difficult to find of this species
and as certainly not very abundant at this
time. I have noted about 5 large chicks,
4 medium chicks and about 4 or five eggs.
Only a very few birds are nesting at this time.
Many birds, however, continue to roost practically
in all areas except where the rocky terrain
is dense. Largest congregation, however,
are roosting along the Ternarium along
the bayon.
25 Oct. right. An estimated 200 birds count
along SE - SW bayon shores in Ternarium
plate.