This document summarizes activities from a project to conserve seabirds in Cape Verde. It discusses reducing threats from invasive species on selected islands through monitoring predation and implementing biosecurity plans. It also addresses at-sea threats from accidental capture in fisheries through research on social drivers in fishing communities and potential mitigation measures. Surveys were conducted in Santo Antão and São Vicente islands to understand fisheries practices and attitudes towards bycatch. Presentations were also held in communities to raise awareness about seabird conservation issues.

1. Anexo1 Appendices photos of the main
activities
CONSERVING CABO VERDE SEABIRDS
Hans Wilsdorf Project Information
June 2023

2. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Number of breeding colonies with effective monitoring of predation of IAS (rodents and cats)

3. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Santo Antão Island)
Nocturnal seabird listing

4. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Santo Antão Island)
Census of individuals of the
Red-billed tropic (Tarrafal – Monte Trigo

5. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response
systems adopted and under implementation
for priority sites (Santo Antão Island)
Coastal bird observations
0
10
20
30
40
50
60
70
Ardea alba Ardea
cinerea
Arenaria
interpres
Bulbucus
ibis
Corvus
ruficollis
Egretta
garzetta
Larus sp Numenius
phaeopus
Pandion
haliaetus
Phaethon
aethereus
Falco
tinnunculus
Owls
January February March

6. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation
for priority sites (Santo Antão Island)
0
13
1
No
Yes
No
answe
r
1. Do you know the seabirds of Cape Verde?
0% 20% 40% 60% 80% 100%
Calonectris edwardsii
Hydrobates jabejabe
Bulweria bulwerii
Phaethon aethereus
Other
1.1 If yes, which seabirds do you know?
Yes No No answer

7. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Branco Islet)
1
8
28
4
0
12
16
2
Bulweria bulwerii Calonectris edwardsii Hydrobates jabejabe Puffinus boydi
Capture/Recapture
Capture Recapture
Capture 40 and Recapture 30
1
7
33
5 6
19
Fora do ninho Ninho Rede Vertical
Capture Recapture
Forms of capture

8. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Branco Islet)
Nocturnal seabird listing
20
52
50
Hydrobates jabejabe
Puffinus boydi
Calonectris edwarsii
Average number of individuals overheard during nightly tapping

9. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Branco Islet)
Monitoring/Maintenance
artificial nests of White-faced
storm petrel

10. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Branco Islet)
Costal bird

11. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Capture (52)
Recapture (62)

12. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Nest monitoring
46 Cape Verde little shearwater nests
0
50
100
150
200
250
Average weight and wing length of Litter shewater chicks
Average weight (g) Average wing length (mm)
Taxa ocupação de ninhos 65,22
Sucesso eclosão 63,33
Taxa de voo 42,11
Taxa sucesso reprodução 26,67

13. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Nest monitoring
40 Brown Booby nests
0
20
40
60
80
100
120
140
160
Jan Fev Mar Ap May
Number of eggs and chicks of Sula leucogaster
Nº Egges- 1ª Colonia Nº Chicks - 1ª Colonia Nº Egges - 2ª Colonia Nº Chicks - 2ª Colonia

14. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Nest monitoring
48 Red-billed tropic nests
Nest occupancy rate 95,83
Hatching success 39,29
Flight rate 63,64
Reproduction success rate 25,00

15. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Active nest censuses (Red-billed tropic )

16. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Active individual censuses
(Brown Booby )
0
50
100
150
200
250
300
350
Fevereiro
Março
Maio
Junho
Julho
Agosto
Setembro
Outubro
Novembro
Janeiro
Fevereiro
Março
Abril
Maio
Janeiro
Fevereiro
Abril
Maio
Junho
Agosto
Setembro
Janeiro
Fevereiro
Março
Abril
Maio
2021 2022 2023
1ªC Adultos 1ªC Imaturos 2ªC Adultos 2ªC Imaturos 1ªC Total de Aves 2ªC Total de Aves

17. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Active individual censuses
(Sula sula)
18.6
36.7
51.4
18.6
23.4
30
2018 2019 2020 2021 2022 2023
Average monthly Sula sula per year

18. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
Observations of coastal birds
0 10 20 30 40 50 60 70
Ardea alba
Ardea cinerea
Arenaria interpres
Bubulcus ibis
Corvus ruficollis
Corvus ruficollis
Egretta garzetta
Falco tinnunculus
Falco tinnunculus alexandri
Hirundo rustica
Numenius phaeopus
Onychoprion fuscatus
Pandion haliaetus
Sula dactylatra
Sula sula
Threskiornis aethiopicus
Coastal birdwatching

19. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
GPS loggers in Brown Booby
(10)

20. Strat 1: Addressing threats on land on selected sites
Result 1.1: Invasive Alien Species (IAS) threats reduced on
selected islands
Biosecurity and emergency response systems adopted and under implementation for
priority sites (Raso Islet)
GPS loggers in Red-billed
tropic (2)

21. Strat 1: Addressing threats on land on selected sites
Result 1.2: Reduce hunting and destruction of burrows
Number of species/sites with deployed artificial burrows
Artificial nest maintenance
in Santa Luzia (80)

22. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (São Nicolau)
Não
52%
Sim
48%
Bycatch

23. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (São Nicolau)
0
5
10
15
20
25
No Yes No answer No Yes No answer No Yes No answer No Yes No answer No Yes No answer No Yes No answer
Bird Scare Noise-cancelling device Prohibition of Disposal Fishing
Gear
Prohibition of Disposal Fishing
waste
Increased Depth Fishing Hook protection
Mitigation Measures Used
Tarrafal Preguiça Juncalino Carriçal

24. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (São Nicolau)
0
5
10
15
20
25
No Yes No
answer
No Yes No
answer
No Yes No
answer
No Yes No
answer
No Yes No
answer
No Yes No
answer
No Yes No
answer
Does the use of bird
abatement measures affect
fishing efficiency?
Are seabirds important to your
fishing activity?
Does the accidental capture of
seabirds or turtles cost you
time or money?
Have there been any events
that have affected
seabird/turtle/tubaran catches
during your recent trips?
Does your fishing go to
certified restaurants?
Have you seen other anglers
catching
seabirds/turtles/tubarons this
month?
Have your earnings increased
or decreased since Covid?
Socio-Economic Issues
Tarrafal Preguiça Juncalino Carriçal

25. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (Santo Antão and São Vicente
Island)
12
7
17
24
Calhau
Ponta do Sol
Salamansa
São Pedro
Surveys by Fishing Communities
27
27
6
Não
Sim
Não respondeu
Member Fishermen's Association
47
0
13
Não
Sim
Não respondeu
Members of the Sea Guardians Programme
4.27
3.14
3.63
6.33
Calhau
Ponta do Sol
Salamansa
São Pedro
Average Number of Fishermen per Vessel
6.33
5.64
6.32
5.40
Calhau
Ponta do Sol
Salamansa
São Pedro
Média de Comprimento Embracação (m)
27
23
8
Não
Sim
Não respondeu
Aves Tartaruga tubarões capturados

26. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (Santo Antão and São Vicente
Island)
METODO DE PESCA (LINHA E ANZOL)
• Comprimento da linha: 198,89 m (média)
• Número de aparelhos na embarcação: 4,57
• Formato do anzol: 100% com barba (n = 58)
• Tamanho do anzol: 1 a 16, 18, 20, 250 e M
• Número de anzois por linha: 4,17
• Média tamanho da ramificação: 15cm

27. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (Santo Antão and São Vicente
Island)
Espécies alvo (um ou mais): Garoupa, Bidião, Bica, Djêu ou Serra,
Olho largo, Goraz, Atum, Dobradão, Papagaio, Moreia, Merot ou
Badejo, , Gaiato, Arrenque, Melva, Salmonete, Salmão, Albacora,
Sargo e Linguado
Espécie de iscas: Cavala, Lula, Polvo, Carapau de fundo, Olho
largo/Melon, Cachorrinha, Sardinha

28. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (Santo Antão and São Vicente
Island)
43
7
8
Não
Sim
Não respondeu
Espantador Pássaros
44
0
14
Não
Sim
Não respondeu
Dispositivo de ruído
22
31
5
Não
Sim
Não respondeu
Proibição Descarte Material Pesca
23
34
1
Não
Sim
Não respondeu
Proibição Descarte Residuos Pesca
1
17
30
10
Igual
Não
Sim
Não respondeu
Aumento Profundidade Pesca
30
1
27
Não
Sim
Não respondeu
Proteção Anzol

29. Strat 2: Addressing at-sea threats from bycatch in fisheries
Result 2.1: Conduct national-level applied research to understand
and then smartly tackle social drivers
Number of surveys/studies carried out at the national level (Santo Antão and São Vicente
Island)
29
9
20
Não
Sim
Não respondeu
O uso de medidas para redução das aves
afeta a eficiência da pesca?
14
44
0
Não
Sim
Não respondeu
As aves marinhas são importantes para a
sua atividade de pesca?
19
37
2
Não
Sim
Não respondeu
A captura acidental de aves marinhas ou
tartarugas custa-lhe tempo ou dinheiro?
Quantos
35
8
15
Não
Sim
Não respondeu
Ocorreu algum evento que afetou a captura de
aves marinhas/tartarugas/tubarões durante as
suas viagens recentes?
38
10
10
Não
Sim
Não respondeu
A sua pescaria vai para restaurantes
certificados?
38
14
6
Não
Sim
Não respondeu
Voce viu outros pescadores capturando aves
marinhas / tartarugas /tubarões este mês?

30. Presentation of the GOS Programme in Fishing Communities

31. Apresentação do Livro "Nôs Pucnuk"

32. Presentation of the book "Nôs Pucnuk"

33. Awareness at School

34. Sindprof Awareness Raising Activity

35. Awareness Raising Activity at ASA - Cape Verde Airport