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
12345
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
+ 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
12345
Stork
Phía Tây sân bay.
+ 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
+ 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
+ Number of birds: 30–40 birds.
+ Heightband (AGL): 25–40 M AGL.
+ Bird density: Sparse.
June–October.
The West of the aerodrome.
Low
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
12345
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
+ 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
+ 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
+ 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
+ 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
+ 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
+ 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
12345
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
+ 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
+ Number of birds: Each flock of APRX 50 birds.
+ Heightband (AGL): 5–30 M AGL.
+ Bird density: Average.
Not specified
Not specified
Average
Falcon
+ Number of birds: 1 to 2 individuals.
+ Heightband (AGL): 20–70 M AGL.
+ Bird density: Low.
Not specified
Not specified
Average
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
12345
Crane
+ Number of birds: A few dozen of birds.
+ Heightband (AGL): > 50 M AGL.
October–December.
High
Stork
+ Number of birds: Hundreds of birds.
+ Heightband (AGL): 20–30 M AGL.
Throughout the year
From the North to the South
High
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
12345
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
+ 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
+ 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
+ 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
+ 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
12345
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
+ 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
+ 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
+ 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
12345
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
+ Number of birds: In flock
+ Heightband (AGL): < 30 M AGL.
+ Bird density: In flock.
Appear throughout the year.
Around the airfield.
Low
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
+ Number of birds: In individual, 1 bird.
+ Heightband (AGL): < 100 M AGL.
+ Bird density: In individual.
Appear daily.
Around the airfield.
High
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
+ 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
+ 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
12345
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
+ 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
12345
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
+ 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
+ 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
+ Number of birds: 5–7 birds.
+ Heightband (AGL): 20–30 M AGL.
+ Bird density: 5–7 birds.
Sometimes.
Perch or fly.
High
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
12345
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
+ 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
+ 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
+ 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
+ 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
12345
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
+ 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
+ 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
+ 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
12345
Swallow
+ Number of birds: > 50 birds.
+ Heightband (AGL): APRX < 100 M AGL.
+ Bird density: Average.
Not specified.
Not specified.
Sparrow
+ Number of birds: > 50 birds.
+ Heightband (AGL): APRX < 100 M AGL.
+ Bird density: Average
Not specified.
Not specified.
Laughing dove
+ Number of birds: > 60 birds.
+ Heightband (AGL): APRX <100 M
+ Bird density: Average.
Not specified.
Not specified.
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
12345
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
+ 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
12345
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
+ 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
+ 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
+ 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
+ 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
+ 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
+ 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
12345
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
+ 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
+ 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
+ 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
+ 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
+ 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
+ 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).
PDF
PDF
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).
PDF
PDF
3.3 Aircraft operator may send the completed forms to addresses: asica@caa.gov.vn; caav@caa.gov.vn; qlc@caa.gov.vn.

Nil