range of MacGillivray's. We suspect that these seven specimens may 
be misidentified. 
Of the remaining 19 Mourning Warblers, five had throats that were 
either buff or whitish, and without any trace of yellow. Nevertheless, 
none of the Mourning Warblers had any hint of obscure darkish streak¬ 
ing on the throat typical of the Staten Island individual and other 
MacGillivray's Warblers. Assessing the coloration of the eye-ring in 
museum specimens is difficult due to the vagaries of the style in which 
the specimens were prepared. Therefore we were unable to quantify the 
usefulness of this character in distinguishing the species based on the 
AMNH specimens. Nevertheless, we did not find any Mourning 
Warblers with bright and restricted orbital crescents that were typical of 
many of the specimens of MacGillivray's Warblers. In sum, our analysis 
of the AMNH specimens supported the validity of the field marks that 
we used to identify the Staten Island MacGillivray's Warbler. We are 
uncertain about the age and sex of the bird, though it was not an adult 
male. We lean towards identifying it as a hatching year male, because of 
the blackish coloration of the lores (females of any age would most like¬ 
ly have greyish lores). 
The accumulation of East Coast records since the late 1970's suggests 
the possibility that the eastwards dispersal of this species has increased 
in recent years. 
STATUS ON THE NORTH AMERICAN EAST COAST 
This constitutes the first record for the state of New York, though there 
is a previous record of a bird banded in Fredonia 29 Oct 1983 (American 
Birds 38(2) p.200) that was considered "probably" this species. In addi¬ 
tion, there are seven records from Massachusetts (Veit and Petersen 
1993), one record from New Jersey (Walsh 1999) one from Georgia (band¬ 
ed, Jekyll Isle 2 Oct 1987 (American Birds 42(1) p.59) and, pending clarifi¬ 
cation, there are either two or three from Florida. See Field Notes 52(3) p. 
322 for the first Florida occurrence, and then North American Birds 53(1) 
p.48 and 53(2) p.163. All but two of these East Coast records are from the 
late fall (Sep to Dec), except for the first from Florida. In addition to the 
above records, there is a male collected in New Haven, CT in May 1890. 
This specimen is AMNH #507935, and appears to us to be 
MacGillivray's. There is also a bird collected by Kenneth P. Able on Block 
Island, Rhode Island 28 Sep 1972 (AMNH#808837) that appears to us to 
be a MacGillivray's as well. Able (pers. comm.) felt that the Block Island 
The Kingbird 2000 March; 50(1) 5 
