Table 5.2 – Active Ardeid Night Roost Survey Findings

Date: 18 March 2022                                                                                                    Sunset Time: 18:34

                                                                                                                                      Tidal Condition: Low Tide

Pre-roost Period

Final roost Period

Time of Return:

Chinese Pond Heron Ardeola bacchus, Intermediate Egret Egretta intermedia, and  Little Egret Egretta garzetta (17:35)

Time of Return:

Chinese Pond Heron Ardeola bacchus, Great Egret Ardea alba, Intermediate Egret Egretta intermedia, and Little Egret Egretta garzetta (18:15)

Parameters

Location

Parameters

Location

ANR1

ANR2

ANR1

ANR2

Pre-roost Aggregation (Y/N):

N

Y

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

2

-

Chinese Pond Heron Ardeola bacchus

6

7

Intermediate Egret Egretta intermedia

3

4

Great Egret Ardea alba

-

3

Little Egret Egretta garzetta

-

2

Intermediate Egret Egretta intermedia

-

6

 

 

 

Little Egret Egretta garzetta

-

10

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