Table 17 Active Ardeid Night Roost Survey Findings

Date: 22 April 2026			Sunset Time: 18:45 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 (18:32)		Time of Return:	Chinese Pond Heron Ardeola bacchus, Great Egret Ardea alba, Little Egret Egretta garzetta and Grey Heron Ardea cinerea (18:58)
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. 4 m.
Substrate Height (m):	Approx. 5 m.	Approx. 4 m.
Ardeid Species Composition	Abundance (individuals)		Ardeid Species Composition	Abundance (individuals)
	ANR1	ANR2		ANR1	ANR2
Chinese Pond Heron Ardeola bacchus	1	1	Chinese Pond Heron Ardeola bacchus	13	9
Great Egret Ardea alba	1	5	Great Egret Ardea alba	1	7
Little Egret Egretta garzetta	-	2	Little Egret Egretta garzetta	2	3
Grey Heron Ardea cinerea	-	1	Grey Heron Ardea cinerea	-	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