Table 5.2 – Active Ardeid Night
Roost Survey Findings
Date: 12 August 2022
Sunset Time: 18:57 Tidal
Condition: Low Tide |
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Pre-roost
Period |
Final roost
Period |
|||||
Time of
Return: |
Chinese Pond Heron Ardeola bacchus, Great Egret Ardea
alba and Little Egret Egretta garzetta (18:40) |
Time of
Return: |
Chinese Pond Heron Ardeola bacchus, and Little Egret Egretta garzetta (19:02) |
|||
Parameters |
Location |
Parameters |
Location |
|||
ANR1 |
ANR2 |
ANR1 |
ANR2 |
|||
Pre-roost
Aggregation (Y/N): |
Y |
N |
Substrate
Species: |
Sonneratia apetala and S.
caseolaris |
Sonneratia apetala and S.
caseolaris |
|
Substrate
Species: |
Sonneratia apetala and S.
caseolaris |
Sonneratia apetala and S.
caseolaris |
Substrate
Height (m): |
Approx. 5 m. |
Approx. 3-4 m. |
|
Substrate
Height (m): |
Approx. 5 m. |
Approx. 3-4 m. |
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Ardeid
Species Composition |
Abundance (individuals) |
Ardeid
Species Composition |
Abundance (individuals) |
|||
ANR1 |
ANR2 |
ANR1 |
ANR2 |
|||
Chinese Pond Heron Ardeola bacchus |
2 |
- |
Chinese Pond Heron Ardeola bacchus |
4 |
5 |
|
Great Egret Ardea alba |
2 |
- |
Little Egret Egretta garzetta |
- |
5 |
|
Little Egret Egretta garzetta |
4 |
- |
|
|
|
|
Breeding
Activity (Y/N): |
ANR1 |
N |
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ANR2 |
N |
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Notes:
Pre-roost Period: Period when avian individuals gather first before flying into a
night roost
ANR1: Active ardeid night roost area east of the
Project boundary
ANR2: Active ardeid night roost area northeast of the
Project boundary
-: not recorded