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THE WILSON JOURNAL OF ORNITHOLOGY . Vol. 123. No. 4. December 2011 
TABLE 1. Number of nests initiated and apparent nest success at Wilson’s Plover nest sites during 2004 on St, Manin 
Apparent successful nests refers to the total number of nests that Hedged at least one chick. 
Tolal Appare 
Welland attempts successful 
Orient 15 3 
Grand Etang 10 6 
Gallion 5 ] 
Etang Poisson 3 2 
Grand Case ] ] 
Simpson Bay 
Lagoon I 0 
First nesl 
initiated 
Mean 
eggs/pair 
Mean 
chicks/pair 
Mean 
fledge/pair 
Area of colony 
(hau 
Mem Jtdoct 
between nets (u) 
3 Mar 
2.20 It 0.59 
0.26 ± 0.59 
0.20 ± 0.41 
1.5374 
13.9 
21 Mar 
2.70 ± 0.48 
1.00 ± 1.05 
0.90 ± 0.99 
0.1360 
14.6 
3 Mar 
2.20 ± 0.45 
0.40 i 0.89 
0.40 ± 0.89 
0.1353 
15.4 
10 Mar 
2.66 ± 0.57 
1.00 ± 1.00 
LOO ± LOO 
0.2399 
17.3 
28 Mar 
2.O') 
2.00 
2.00 
0.4943 
N/A 
10 May 
2.00 
0.00 
0.00 
2.2626 
N/A 
nest was 0.6 ± 0.768 with 25.3% of total 
eggs hatching; mean hatching date was 16 April 
(range = 28 Mar-26 Apr). The mean (± SD) 
number of fledged chicks/nest was 0.54 ± 0.707 
with 90.5% of chicks fledging; the mean fledging 
date was 7 May (range = 18 Apr-17 May) 
(Fig. 2). J 
Apparent nest success, the proportion of 
observed nesting attempts that succeeded, was 
37.1%. but varied among sites. Orient Pond, the 
site with the most nesting attempts (n = 15 ) and 
most failed nests, had 20% apparent nest success. 
The next largest population. Grand Etang (n = 
10) had 60% apparent nest success. Gallion Pond, 
the third largest colony (n = 5). had 20% apparent 
nesting success. The smaller populations had 
more widespread nest success. Etang Poisson (n 
= 3) had apparent nest success of 67%, Grand 
Case (n = I) had an apparent nest success of 
100%. and Simpson Bay Lagoon (/; = 1) bad an 
apparent nest success of 0%. 
There were two peaks in nest initiation: 3-21 
March and 10-26 May (Fig. 2). Nests that 
successfully fledged at least one chick were 
