Jo Romain. Reintroduction program of Lesser Kestrel in France: 10 years after

Transcription

1 Jo Romain Reintroduction program of Lesser Kestrel in France: 10 years after

2 Context colonies Population of Lesser Krestrel International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 2

3 Context colony with 3 pairs at the Population beginning of increase 1980 s up to 65 pairs in 2001 Crau M. Bourgeois 1 st LIFE project ( ) is developed to ensure the maintenance and growth of this sole population International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 3

4 C. Grangier Context J. Guillaumot 2002 New population in village with 11 pairs Hérault Crau International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 4

5 J. Gonin Context then 2 pairs in nest boxes installed for European Roller Hérault Crau Crau: 63 then 98 pairs Hérault: 11 then 14 pairs Aude A LIFE project is in reflection to help this new population International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 5

6 Context 2005 Pairs in nest boxes disappear Hérault Crau Crau: 127 pairs Hérault: 24 pairs LIFE project called Life Transfert including reintroduction program is accepted and will begin in International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 6

7 Reintroduction program The reintroduction method used is that developed by DEMA. It consists : LPO Aude to put chicks in an artificial nest box placed on the release site To maintain captive adults on the release site to create an atmosphere of a colony This method increases the duration of the presence of the reintroduced chicks and improves their rate of return. International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 7

8 LPO Aude Reintroduction program LPO Aude An abandoned wine building has been converted into reintroduction and nesting site (32 nest boxes) After International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 8

9 LPO Aude Reintroduction program 199 from DEMA (Spain) + 39 from UFCS (France) = 238 chicks released (40 % more of original project) Life Transfert International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 9

10 Creation of new population LPO Aude chicks released International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 10

11 Creation of new population pair 53 chicks released International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 11

12 Creation of new population LPO Aude M. Fouquet breeding sites 5 pairs -> 3 juv. 55 chicks released International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 12

13 Creation of new population breeding sites 12 pairs -> 15 juv. 69 chicks released International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 13

14 Creation of new population M. Bourgeois breeding sites 12 pairs -> 18 juv. 8 chicks released New site in nest box in a farm International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 14

15 Creation of new population 2011 C. Grangier 5 breeding sites 18 pairs -> 54 juv. M. Bourgeois Deserts pylons because competition with roller International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 15

16 Creation of new population M. Fouquet breeding sites 19 pairs -> 46 juv. Colonization of the village International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 16

17 Creation of new population K. Martorell breeding sites 20 pairs -> 62 juv. Collapse of building supporting nest boxes International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 17

18 Creation of new population breeding sites 25 pairs -> 74 juv. International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 18

19 Creation of new population breeding sites 25 pairs -> 78 juv. 2 new villages colonized International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 19

20 Creation of new population breeding sites 37 pairs -> 114 juv. Less pairs in release site and more in village International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 20

21 Habitats International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 21

22 * Pairs French population French population Herault population Gard population Crau population Aude population * 1 st approximation for Herault population International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 22

23 Site fidelity Year Flying chicks Individuals reviewed in the site in the site Return rate % % % % % % Tot % Very good return on the sites of young released (also higher than for wild chicks) but installation as nesting on the release site is much lower and dispersion is higher International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 23

24 2006 Oringin of breeders Number of pairs 100% Number chicks released 50 80% 40 60% % 20% 0% Надпис на ос? or without ring Exterior Released Born in Aude Number of pairs International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 24

25 Demographic parameters Juvenile survival always good adult survival increase <- dispersal to other populations Year survival Frequency of reproduction Juvenile Immature/Adult Immature Adult 2006/ % % 58 % % 40 % % 53 % % 72 % % 64 % % 79 % % 75 % * -* -* -* * * 93 % Mean ( ) 0.59 (0.50) 0.57 (0.69) 45 % (46%) 72 % (88%) *Data deficient or insufficient number of chicks ringed / Crau s population in red International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 25

26 Year Pairs Clutch size Pair with success Pair with failure Success rate Flying juveniles Breeding success Productivity Chicks released Breeding parameters unknown % 4 4 (n=1) unknown % (n=1) unknown 0 1 0% 0 0 (n=1) (n=2) % (n=2) (n=7) % (n=4) (n=5) % (n=5) (n=17) % (n=16) (n=9) % (n=9) unknown % (n=11) (n=10) % (n=10) (n=7) % (n=5) (n=2) % (n=18) Tot (n=59) % International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 26

27 Viability Productivity > 2 > 5 colonies > 50 breeding pairs (on the way to be reached) adult survival > 0.70 Close by conditions to the population viability! International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 27

28 How improve the reintroduction Before : Ensure sufficient availability of nesting sites around the release site Release chicks from several nesting boxes by small groups of 4-5 to facilitate the installation of breeders (high propensity to settle in released box during the first nesting) and limit the dispersion. Multiply simultaneous release sites to avoid intraspecific competition (strong territoriality of the first pairs who settle). International Lesser Kestrel Expert Workshop October Plovdiv, Bulgaria 28

29 Jo Romain Reintroduction program is a successful Lesser Kestrel seems to have a great promise in the Aude

30 Thanks for your attention