Table 5.2 – Active Ardeid Night
Roost Survey Findings
|
Date: 19 November 2021
Sunset Time: 17:39
Tidal Condition: Low Tide |
||||||
|
Pre-roost
Period |
Final roost
Period |
|||||
|
Time of
Return: |
Chinese Pond Heron Ardeola bacchus, Eastern Cattle Egret (Bubulcus
coromandus) Intermediate Egret Egretta
intermedia (17:04) |
Time of
Return: |
Chinese Pond Heron Ardeola bacchus and Little Egret Egretta
garzetta (17:58) |
|||
|
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. |
||||
|
Ardeid
Species Composition |
Abundance (individuals) |
Ardeid
Species Composition |
Abundance (individuals) |
|||
|
ANR1 |
ANR2 |
ANR1 |
ANR2 |
|||
|
Chinese Pond Heron Ardeola bacchus |
7 |
- |
Chinese Pond Heron Ardeola bacchus |
3 |
64 |
|
|
Eastern Cattle Egret Bubulcus coromandus |
3 |
- |
Little Egret Egretta garzetta |
- |
23 |
|
|
Intermediate Egret Egretta
intermedia |
5 |
- |
|
|
|
|
|
Breeding
Activity (Y/N): |
ANR1 |
N |
||||
|
ANR2 |
N |
|||||
|
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 *:
individuals aggregated on the exposed mudflat -: not
recorded |
||||||