BIRD MIGRATION AND AREAS WITH SENSITIVE FAUNA

ENR 5.6 BIRD MIGRATION AND AREAS WITH SENSITIVE FAUNA

1 Birds and wildlife activities in the vicinity of 9 international airports affect to en-route

1.1 Cat Bi Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Stork
Stork	+ Number of birds: 1–30 birds. + Heightband (AGL): 0–30 M AGL. + Bird density: High (Gather in flock).	+ Winter. + Spring.	+ North–South. + South–North.	High (gather in flock, fly through aquaculture lagoon within the approaching area of RWY).
Swallow
Swallow	+ Number of birds: > 50 birds. + Heightband (AGL): 30–50 M AGL. + Bird density: High.	+ Winter. + Spring.	+ North–South. + South–North.	High (gather and perch on RWY, fly in flock when there is aircraft taking off/landing).

1.2 Cam Ranh Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Stork			Phía Tây sân bay.
Stork	+ Number of birds: 15–20 birds. + Heightband (AGL): 30–40 M AGL. + Bird density: Sparse.	April–August.	The West of the aerodrome.	Low
Wild duck
Wild duck	+ Number of birds: 25–40 birds. + Heightband (AGL): 30–40 M AGL. + Bird density: Sparse.	June–October.	The West of the aerodrome.	Low
Little cormorant
Little cormorant	+ Number of birds: 30–40 birds. + Heightband (AGL): 25–40 M AGL. + Bird density: Sparse.	June–October.	The West of the aerodrome.	Low
Seagull
Seagull	+ Number of birds: 20–30 birds. + Heightband (AGL): 20–30 M AGL. + Bird density: Sparse.	August–November.	The West of the aerodrome.	Low

1.3 Can Tho Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Storks
Storks	+ Number of birds: 1–20 birds, peak at > 50 birds. + Heightband (AGL): APRX 20–30 M AGL. + Bird density: Moving in a flock of 5–20 birds.	Occur throughout the year, especially during ripening rice seasons or when the rice fields are flooded.	Around aerodrome, airfield to breed at wooded areas around the vicinity of the aerodrome.	Average
Spotted dove
Spotted dove	+ Number of birds: 10–50 birds, peak at > 100 birds. + Heightband (AGL): < 20 M. + Bird density: Appears in flocks of 5–50 birds.	Occur throughout the year, increasing frequency during ripening rice seasons, insects breeding season.	Not fixed, move to a suitable food source.	Average
Swallow
Swallow	+ Number of birds: 50–100 birds, peak at > 300 birds. + Heightband (AGL): APRX 5–20 M AGL. + Bird density: Moving in flock ranging 50–100 birds.	At the end of Winter and the beginning of spring from November to April.	Around the aerodrome, airfield, to breed in areas with lots of trees and large grass bushes.	Average
Herons, Falcon
Herons, Falcon	+ Number of birds: 1–3 birds, operate individually or in pairs. + Heightband (AGL): APRX < 50 M AGL. + Bird density: 1–3 birds.	Not fixed.	Around the airport, airfield to hunt.	Average
Coucal
Coucal	+ Number of birds: 1–5 birds. + Heightband (AGL): APRX < 20 M AGL. + Bird density: 1–05 birds.	Throughout the year.	Around the airport, the runway strip, finding crabs, snails in the sunken areas.	Low
Sandpiper, Sandpiper common
Sandpiper, Sandpiper common	+ Number of birds: 1–10 birds. + Heightband (AGL): APRX < 20 M AGL. + Bird density: 1–10 birds.	Throughout the year.	Around the airport, airfield.	Low
Pigeon
Pigeon	+ Number of birds: Not fixed, 1–50 birds. + Heightband (AGL): APRX < 20 M AGL. + Bird density: 1–50 birds	Not specified.	Around the airport.	Low

1.4 Da Nang Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Swallow
Swallow	+ Number of birds: Each flock of 20–30 birds. + Heightband (AGL): 5–30 M AGL. + Bird density: Average.	Not specified	Not specified	Average
Frogmouth
Frogmouth	+ Number of birds: Each flock of APRX 50–70 birds. + Heightband (AGL): 5–20 M AGL. + Bird density: Hight.	Not specified	Not specified	Average
Stork, Bittern, Pelican
Stork, Bittern, Pelican	+ Number of birds: Each flock of APRX 50 birds. + Heightband (AGL): 5–30 M AGL. + Bird density: Average.	Not specified	Not specified	Average
Falcon
Falcon	+ Number of birds: 1 to 2 individuals. + Heightband (AGL): 20–70 M AGL. + Bird density: Low.	Not specified	Not specified	Average
Owl
Owl	+ Number of birds: 5–10 birds. + Heightband (AGL): 10–50 M AGL. + Bird density: Low.	Not specified	Not specified	Average

1.5 Noi Bai Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Crane
Crane	+ Number of birds: A few dozen of birds. + Heightband (AGL): > 50 M AGL.	October–December.		High
Stork
Stork	+ Number of birds: Hundreds of birds. + Heightband (AGL): 20–30 M AGL.	Throughout the year	From the North to the South	High
Heron
Heron	+ Number of birds: Hundreds of birds. + Heightband (AGL): 20–30 M AGL.	Throughout the year	From the North to the South	High

1.6 Phu Bai Airport: NIL

1.7 Phu Quoc Airport: NIL

1.8 Tan Son Nhat Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Sparrow
Sparrow	+ Number of birds: Flock of 5–40 birds. + Heightband (AGL): < 30 M AGL. + Bird density: In flock.	From November to April.	Around the airfield.	Average
Spotted dove
Spotted dove	+ Number of birds: APRX 02–05 birds. + Heightband (AGL): < 30 M AGL. + Bird density: In flock.	From November to April.	Around the airfield.	Low
Swallow
Swallow	+ Number of birds: Flock of 5–80 birds. + Heightband (AGL): < 100 M AGL. + Bird density: In flock.	From April to November.	Around the airfield.	Average
Bat
Bat	+ Number of birds: In individual 1–5 birds. + Heightband (AGL): < 30 M AGL. + Bird density: In individual.	Twilight and by night.	Around the airfield.	Average
Falcon, Hawk
Falcon, Hawk	+ Number of birds: In individual 01 bird. + Heightband (AGL): > 100 M AGL. + Bird density: In individual.	From November to April.	Around the airfield.	Low

1.9 Van Don Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Storks
Storks	+ Number of birds: 30–40 birds + Bird density: Fly thickly in flocks + Heightband (AGL): 0–20 M AGL. + Operating period: Early morning and late afternoon.	July–August		- Low - Warning information: Pay attention to flights during 2200–0000 and 0900–1100.
Bittern
Bittern	+ Number of birds: Can not statistic. + Bird density: Thick. + Heightband (AGL): 0–20 M AGL. + Operating period: By night.	September–November		- High - Warning information: Pay attention to flights: 1200–2200.
Laughing dove		Tháng 7–tháng 9
Laughing dove	+ Number of birds: APRX 100 birds. + Bird density: Sparse. + Heightband (AGL): 0–5 M AGL. + Operating period: By day.	July–September		Low
Swallow		Tháng 1–tháng 2
Swallow	+ Number of birds: APRX 50 birds. + Bird density: Small flock + Heightband (AGL): 0–5 M AGL. + Operating period: By day.	January – February		- Low - Warning information: Pay attention to flights: 2300–0300.

2 Bird and wildlife animal activities in the vicinity of 13 domestic airports affected to en-route

2.1 Buon Ma Thuot Airport

During the past time and up to now, at Buon Ma Thuot Airport, there is no migratory bird.

2.2 Chu Lai Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Sparrow
Sparrow	+ Number of birds: Flock of 5–40 birds. + Heightband (AGL): < 30 M AGL. + Bird density: In flock.	Appear throughout the year.	Around the airfield.	Low
Spotted dove
Spotted dove	+ Number of birds: In flock + Heightband (AGL): < 30 M AGL. + Bird density: In flock.	Appear throughout the year.	Around the airfield.	Low
Bat
Bat	+ Number of birds: In individual, 1–5 birds. + Heightband (AGL): < 10 M AGL. + Bird density: In individual.	By night	Around the airfield.	Low
Falcon, Hawk
Falcon, Hawk	+ Number of birds: In individual, 1 bird. + Heightband (AGL): < 100 M AGL. + Bird density: In individual.	Appear daily.	Around the airfield.	High
White stork
White stork	+ Number of birds: Flock of 50–70 birds. + Heightband (AGL): 20–40 M AGL. + Bird density: In flock.	From September to April the next year.	Around the airfield.	High
Wild duck
Wild duck	+ Number of birds: Flock of 60–80 birds. + Heightband (AGL): < 40 M AGL. + Bird density: In flock.	Appear throughout the year.	Around the airfield.	High
Bittern
Bittern	+ Number of birds: Flock of 60–80 birds. + Heightband (AGL): 40–80 M AGL. + Bird density: In flock.	Appear in the rainy season.	Around the airfield.	High

2.3 Ca Mau Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
China stork
China stork	+ Number of birds: Moving in flock up to hundreds of birds. + Heightband (AGL): APRX 50–100 M AGL. + Bird density: High.	Move to the South in October and move to the North in April.	Move to the South to U Minh forest and the alluvial ground of the riverside and the seacoast.	Low
Sandpiper, Snipe
Sandpiper, Snipe	+ Number of birds: Moving in flock up to hundreds of birds. + Heightband (AGL): APRX 50–100 M AGL. + Bird density: High.	Move to the South in October and move to the North in April.	Move to the South to the alluvial ground of the riverside and the seacoast.	Low

2.4 Con Dao Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Sea eagle
Sea eagle	+ Number of birds: A few birds. + Heightband (AGL): 100–200 M AGL. + Bird density: A few birds.	From January to April and from September to December.	Fly in the air.	High
Hawk
Hawk	+ Number of birds: A few birds + Heightband (AGL): 20–30 M AGL. + Bird density: A few birds.	From January to April and from September to December.	Perch or fly.	High
Stork
Stork	+ Number of birds: Peak at 100 birds. + Heightband (AGL): 20 M – 30M AGL. + Bird density: Peak at 100 birds.	From January to April and from September to December.	Perch or fly.	High
Wild duck
Wild duck	+ Number of birds: 5–7 birds. + Heightband (AGL): 20–30 M AGL. + Bird density: 5–7 birds.	Sometimes.	Perch or fly.	High
Wood pigeon
Wood pigeon	+ Number of birds: 15–20 birds. + Heightband (AGL): 20–30 M AGL and the strip, RWY. + Bird density: 15–20 birds.	Sometimes.	Perch or fly.	High

2.5 Dien Bien Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
White stork
White stork	+ Number of birds: APRX 300 birds. + Heightband (AGL): APRX 20–40 M AGL. + Bird density: Move in flocks, large number.	From March to October.	The East, West of the RWY.	High
Asian openbill
Asian openbill	+ Number of birds: APRX 500 birds. + Heightband (AGL): APRX 20–40 M AGL. + Bird density: Move in flocks, large number.	From March to October.	The East, West of the RWY.	High
Hawk
Hawk	+ Number of birds: APRX 5 birds. + Heightband (AGL): APRX 20–40 M AGL. + Bird density: Move individually, small number.	From March to June.	The North-Westhern of the RWY.	Low
Sparrow
Sparrow	+ Number of birds: APRX 100 birds. + Heightband (AGL): From ground to 10 M. + Bird density: Move individually, small number.	From November to April the next year.	Around the airfield, terminal, office.	Low
Snipe
Snipe	+ Number of birds: APRX 20 birds. + Heightband (AGL): APRX 5–10 M AGL. + Bird density: Move individually, small number.	From March to June.	The airfield.	Low

2.6 Dong Hoi Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
White stork
White stork	+ Number of birds: Flock of 20 birds. + Heightband (AGL): 5–15 M AGL. + Bird density: Average.	Winter.	Migrate from the North to the South, roost in ponds, lakes, and bushes near ponds in the airfield.	Average
Heron
Heron	+ Number of birds: Flock of 15 birds + Heightband (AGL): 5–20 M AGL. + Bird density: Average.	Winter.	Migrate from the North to South, roost in lakes and ponds in the airfield.	Average
Swallow
Swallow	+ Number of birds: Flock of 10–20 birds. + Heightband (AGL): 5–10 M AGL. + Bird density: Very low.	Winter.	Migrate from the North to the South, roost in reeds, tall bushes, often perch on RWY, aircraft apron.	Low
Falcon, Hawk
Falcon, Hawk	+ Number of birds: In individual. + Heightband (AGL): 5–30 M AGL. + Bird density: Low.	Winter.	Migrate from North to South, roost in high ground areas with big trees around the airport perimeter	Low

2.7 Lien Khuong Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Swallow
Swallow	+ Number of birds: > 50 birds. + Heightband (AGL): APRX < 100 M AGL. + Bird density: Average.	Not specified.	Not specified.
Sparrow
Sparrow	+ Number of birds: > 50 birds. + Heightband (AGL): APRX < 100 M AGL. + Bird density: Average	Not specified.	Not specified.
Laughing dove
Laughing dove	+ Number of birds: > 60 birds. + Heightband (AGL): APRX <100 M + Bird density: Average.	Not specified.	Not specified.
Falcon, Hawk
Falcon, Hawk	+ Number of birds: < 10 birds. + Heightband (AGL): APRX < 100 M AGL. + Bird density: Low.	Not specified.	Not specified.

2.8 Phu Cat Airport: NIL

2.9 Pleiku Airport:

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
White stork
White stork	+ Number of birds: APRX 200–300 birds. + Heightband (AGL): 20–30 M AGL. + Bird density: High.	From April to November.	From the fields on the East, the South adjacent to the aerodrome.	High
Other species : Weasel, Rabbit, Stray cat
Other species : Weasel, Rabbit, Stray cat	+ Number of birds: 1–2 individuals. + Heightband (AGL): On the ground. + Bird density: Low.	In the garden, the bushes.	Around the airfield.	Average

2.10 Rach Gia Airport: NIL

2.11 Tuy Hoa Airport: NIL

2.12 Tho Xuan Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Spotted dove
Spotted dove	Number of birds: Peak at > 10 birds. + Heightband (AGL): 5–15 M AGL. + Bird density: Appear in flock of 5–10 birds.	From May to October.	Around the airfield.	High
White stork
White stork	+ Number of birds: Peak up at > 200 birds. + Heightband (AGL): 20–30 M AGL. + Bird density: Appears in flock with large number.	From May to October	South-North	High
Owl
Owl	+ Number of birds: Peak at > 5 birds. + Heightband (AGL): 5–10 M AGL. + Bird density: Appear sparsely with small number.	From May to October.	Around the airfield.	High
Falcon, Hawk
Falcon, Hawk	+ Number of birds: Peak at > 5 birds. + Heightband (AGL): 10–30 M AGL. + Bird density: Appear sparsely with small number.	Sometimes.	North – South.	High
Crow, Starling
Crow, Starling	+ Number of birds: > 100 birds. + Heightband (AGL): 5–20M AGL. + Bird density: Gather in flock with large number.	From November to April.	North – South	High
Sparrow, Munia, Red–whiskered bulbul
Sparrow, Munia, Red–whiskered bulbul	+ Number of birds: > 300 birds. + Heightband (AGL): 4–10 M AGL. + Bird density: Appears in flocks with large number.	From November to April.	Around the airfield.	High
Wild duck
Wild duck	+ Number of birds: 10–15 birds. + Heightband (AGL): APRX 5–10 M AGL. + Bird density: Appears sparsely with small number.	From November to April.	Around the airfield.	High

2.13 Vinh Airport

Birds species	Number of birds, heightband, density	Migration period	Movement direction	Safety risk level
1	2	3	4	5
Spotted dove
Spotted dove	+ Number of birds: Peak at more than 10 birds. + Heightband (AGL): 5–15 M AGL. + Bird density: Appears in flocks of 5–10 birds.	May–October	Around the airfield	High
White stork, Fire bird
White stork, Fire bird	+ Number of birds: Peak at more than 150 birds. + Heightband (AGL): 20–30 M AGL. + Bird density: Appears in flocks with large number.	May–October	South–North	High
Owl
Owl	+ Number of birds: Peak at more than 5 birds. + Heightband (AGL): 5–10 M AGL. + Bird density: Appears sparsely with small number.	May–October	Around the airfield
Falcon, Hawk
Falcon, Hawk	+ Number of birds: Peak at more than 5 birds. + Heightband (AGL): 10–15 M AGL. + Bird density: Appears sparsely with small number.	Sometimes	North–South	High
Swallow
Swallow	+ Number of birds: More than 100 birds. + Heightband (AGL): 5–20 M AGL. + Bird density: Appears in flocks with large number.	November–April	North–South	High
Sparrow, Munia, Red–whiskered bulbul
Sparrow, Munia, Red–whiskered bulbul	+ Number of birds: More than 300 birds. + Heightband (AGL): 4–10 M AGL. + Bird density: Appears in flocks with large number.	November–April	Around the airfield	Average
Wild duck
Wild duck	+ Number of birds: 10–15 birds. + Heightband (AGL): 5–10 M AGL. + Bird density: Appears sparsely with small number.	November–April	Around the airfield	Average

3 Reporting of bird strike

3.1 Aircraft operators are responsible for reporting aircraft incidents with birds, wildlife, pets or hazards from birds, wildlife, pets that the aircraft operators observe both in the air and on the ground to the airport operators, Civil Aviation Authority of Viet Nam (CAAV) and Airport Authority in accordance with regulations on aviation safety reporting.

3.2 The aircraft operators shall report to the CAAV and airport operators when there is an incident of birds, wildlife, pets with aircraft according to birds, wildlife, pets strike reporting form and supplementary bird strike reporting form about operation costs and engine damage caused by birds, wildlife, pets strike with aircraft with the details as follows:

3.2.1 Birds, wildlife, pets strike with aircraft reporting form (see Appendix-1 pages ENR 5.6-16, ENR 5.6-17).

3.2.2 Supplementary bird strike reporting form about operation costs and engine damage caused by birds, wildlife, pets strike with aircraft (see Appendix-2 pages ENR 5.6-18, ENR 5.6-19).

3.3 Aircraft operator may send the completed forms to addresses: asica@caa.gov.vn; caav@caa.gov.vn; qlc@caa.gov.vn.

Nil