Table 5.2 – Active Ardeid Night Roost Survey Findings

Date: 16 September 2022                                                                                             Sunset Time: 18:26

                                                                                                                                      Tidal Condition: Low Tide

Pre-roost Period

Final roost Period

Time of Return:

Little Egret Egretta garzetta and Grey Heron Ardea cinerea (18:10)

Time of Return:

Chinese Pond Heron Ardeola bacchus, and Little Egret Egretta garzetta (18:30)

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

Little Egret Egretta garzetta

2

2

Chinese Pond Heron Ardeola bacchus

10

15

Grey Heron Ardea cinerea

1

-

Little Egret Egretta garzetta

-

2

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

-: not recorded