As a regular task of the wardens employed by BirdLife in coordination with Souss Massa National park, monitoring of the colonies is essential to evaluate the evolution of the population
Regular
monitoring of the population produced the following results:
|
|
SMNP
|
TAMRI
|
SMNP & TAMRI
|
|||
|
Site A
|
Site F
|
Site E
|
Total
|
|||
|
Pairs
|
20
|
20
|
21
|
61
|
63
|
124
|
|
Pairs laying eggs
|
19
|
18
|
21
|
58
|
57
|
115
|
|
Hatchlings
|
35
|
41
|
53
|
129
|
151
|
280
|
|
Fledglings
|
30
|
36
|
46
|
112
|
80
|
192
|
|
Chick survival (%)
|
58,7
|
87,8
|
86,7
|
86,8
|
52,9
|
68,5
|
|
Productivity
|
1,6
|
2
|
2,2
|
1,9
|
1,4
|
1,6
|
A
productivity of 1.6 fledglings per pair is very successful for this species. In
fact, if we compare these parameters with the previous year we get
|
|
SMNP
|
Tamri
|
SMNP + Tamri
|
||||
|
2013
|
2014
|
2013
|
2014
|
2013
|
2014
|
||
|
Pairs
|
51
|
61
|
62
|
63
|
118
|
124
|
|
|
Pairs laying eggs
|
53
|
58
|
60
|
57
|
113
|
115
|
|
|
Hatchlings
|
101
|
129
|
161
|
151
|
262
|
280
|
|
|
Fledglings
|
77
|
112
|
71
|
80
|
148
|
192
|
|
|
Chick survival (%)
|
76.2
|
86.8
|
44
|
52.9
|
56.4
|
68.5
|
|
|
Productivity
|
1.4
|
1.9
|
1.1
|
1.4
|
1.3
|
1.6
|
|
The
evolution becomes evident if we compare among years
Figure 1 Evolution of the number of
pairs and fledglings in Souss-Massa and Tamri area
We can see
that both the number of pairs and fledglings is the highest ever recorded in
Morocco since the beginning of NBI conservation program in the 1990s.
In addition
to the very successful breeding records, the regular census at roosts, gave at
least 524 individuals. The evolution of the population is shown in the
following figure.
Figure 2
Evolution of the post breeding numbers of NBI in Souss-Massa and Tamri
area
In 2004,
the count was 528 individuals, only slightly over the current record.
