Abundance and Distribution
Total counts for the whole survey period (between May 2006 and December 2007)
and peak daily counts for the whole survey period are summarised in the tables below (click on the
adjacent links to see).
Behavior
In order to investigate bird behaviour within the Study Area, all birds were assigned a behavioural
category to their key activities under observation: “feeding”, “flying”, and “resting” (either “sitting” on
water / “standing” on floating objects or perching on trees on adjacent land). The table in the
adjacent link summarises the observed bird behaviour.
The results display that only 513 feeding records (10% of sightings) were within the Study Area, with
46% of these records reflecting the behaviour of Black-naped Tern and Bridled Tern. Feeding
behaviour was also significant for Pacific Swift (Apus pacificus) (86 nos.), Red-necked Phalarope
(Phalaropus lobatus) (51 nos.), Aleutian Tern (Sterna aleuticaand) (38 nos.) Little Swift (Apus
affinis) (33 nos.). The figures below display the distribution of these six species within the survey
area and their corresponding behaviour (please click to enlarge)
Aleutian Tern Black-naped Tern Bridled Tern
Little Swift Pacific Swift Red-necked Phalarope
Total counts for the whole survey period (between May 2006 and December 2007)
and peak daily counts for the whole survey period are summarised in the tables below (click on the
adjacent links to see).
Behavior
In order to investigate bird behaviour within the Study Area, all birds were assigned a behavioural
category to their key activities under observation: “feeding”, “flying”, and “resting” (either “sitting” on
water / “standing” on floating objects or perching on trees on adjacent land). The table in the
adjacent link summarises the observed bird behaviour.
The results display that only 513 feeding records (10% of sightings) were within the Study Area, with
46% of these records reflecting the behaviour of Black-naped Tern and Bridled Tern. Feeding
behaviour was also significant for Pacific Swift (Apus pacificus) (86 nos.), Red-necked Phalarope
(Phalaropus lobatus) (51 nos.), Aleutian Tern (Sterna aleuticaand) (38 nos.) Little Swift (Apus
affinis) (33 nos.). The figures below display the distribution of these six species within the survey
area and their corresponding behaviour (please click to enlarge)
Aleutian Tern Black-naped Tern Bridled Tern
Little Swift Pacific Swift Red-necked Phalarope
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Avifauna Ecology Survey Results
Ornithological Importance of the Surveyed Area
The adjacent table shows species recorded within the Study in terms of residential and
conservation status.
Based on the results of the desktop study and the field survey, several species or species groups
are considered to be of relatively higher sensitivity due to their conservation significance,
distribution and / or abundance within the Study Area, the distribution of these species can be seen
below (please click to enlarge).
The adjacent table shows species recorded within the Study in terms of residential and
conservation status.
Based on the results of the desktop study and the field survey, several species or species groups
are considered to be of relatively higher sensitivity due to their conservation significance,
distribution and / or abundance within the Study Area, the distribution of these species can be seen
below (please click to enlarge).
To allow analysis of the pattern of bird flight height, all relevant data was grouped into categories
corresponding to the configuration of the proposed wind turbine options as displayed below.
corresponding to the configuration of the proposed wind turbine options as displayed below.
Aleutian Tern Black-naped Tern Bridled Tern Roseate Tern White Winged
Black Tern
White Bellied Red-necked
Cattle Egret Sea Eagle Phalarope Black Tailed Gull
Black Tern
White Bellied Red-necked
Cattle Egret Sea Eagle Phalarope Black Tailed Gull
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