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FIG. I. Gray Trembler nest on St. Lucia. (A) Adult trembler incubating. <B) Eggs and nest structure visible between 
incubation bouts (photographs by J. B. LaPergola). 
Tremblers would suggest a radical departure from 
the simpler open-cup nest typical of most mimids. 
We suggest Danforth’s (1935) original second¬ 
hand description may have resulted from mis- 
identification of the owners of the nest in 
question. Resident species on St. Lucia that build 
domed or otherwise covered nests include St. 
Lucia Black Finch (Melanospiza richardsoni). 
Lesser Antillean Bullfinch (LaxigilUi nod is). 
Black-faced Grassquil (Haris bicolor), Antillean 
Euphonia (Euphonia nntsica), Bananaquit (Cae¬ 
re ba Jluveola), and St. Lucia Oriole (Icterus 
laudabilis) (Keith 1997). 
Our observations establish unequivocally the 
color (greenish-blue) of Gray Trembler eggs, but 
the accuracy of our estimates of egg dimensions is 
questionable. Our length and width estimates are 
smaller than those for Brown Trembler (C. 
ntjicaiulci ruficauda ) eggs from Dominica (length: 
25.91 ± 0.93 mm and width: 19.49 ± 0.08 mm; 
// = 3 eggs; from the collection at the Western 
Foundation of Vertebrate Zoology, catalogue 
number 120.066: Rene Corado, pers. comm.). 
Adult St. Lucian Gray Tremblers are on average 
larger than Dominican Brown Tremblers (Storer 
1989), which suggests our measurements under- 
