Table 5.2 – Active Ardeid Night Roost Survey Findings

Date: 12 April 2023 Sunset Time: 18:42 Tidal Condition: High Tide
Pre-roost Period				Final roost Period
Time of Return:	Grey Heron Ardea cinerea, Great Egret Ardea alba and Chinese Pond Heron Ardeola bacchus (18:00)			Time of Return:	Chinese Pond Heron Ardeola bacchus, Little Egret Egretta garzetta, Great Egret Ardea alba, and Grey Heron Ardea cinerea (18:27)
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		-	1	Chinese Pond Heron Ardeola bacchus	2	9
Grey Heron Ardea cinerea		1	1	Little Egret Egretta garzetta	-	7
Great Egret Ardea alba		2	-	Great Egret Ardea alba	-	6
				Grey Heron Ardea cinerea	1	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