Table 17   Active Ardeid Night Roost Survey Findings

Date: 15 January 2025

Sunset Time: 18:00

Tidal Condition: Low Tide

 

Pre-roost Period

Final roost Period

Time of Return:

Chinese Pond Heron Ardeola bacchus, Great Egret Ardea alba, Little Egret Egretta garzetta and Grey Heron

Ardea cinerea (17:31)

Time of Return:

Chinese Pond Heron Ardeola bacchus, Great Egret Ardea alba, Little Egret Egretta garzetta and Grey Heron

Ardea cinerea (17:59)

Parameters

Location

Parameters

Location

ANR1

ANR2

ANR1

ANR2

Pre-roost Aggregation (Y/N):

Y

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

8

14

Chinese Pond Heron Ardeola bacchus

7

36

Great Egret
Ardea alba

6

2

Great Egret
 Ardea alba

1

1

Little Egret

Egretta garzetta

2

1

Little Egret

Egretta garzetta

-

2

Grey Heron

Ardea cinerea

2

2

Grey Heron

Ardea cinerea

2

3

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