preferred habitats are the aspen-birch- 
conifer type and the clearings and par¬ 
tial clearings. In 1905 they were com¬ 
mon during the September fall migration 
and were noted often in the damp alder 
thickets (14). Wood saw two of these 
warblers in June 1930 ( 21) and Shelton 
two in July 1960. Shelton felt the 
species may be a rare nester (39) . 
**157. Mourning Warbler ( Oporornis 
Philadelphia (Wilson)) 
This warbler is a common summer 
resident and can often be seen in the 
aspen-birch-conifer type or in the 
clearings or partial clearings. In 
1905 an immature specimen and an adult 
female were noted (14). One sight 
record was made in 1924, and two nests 
were found in 1930 (21) . Later sight 
observations were made in 1943 and 1946 
(27, 30). During the early 1960's, 
Shelton regarded this warbler as a 
common summer resident (39) . The pre¬ 
ferred habitat seemed to be dense 
patches of hazel with an aspen over¬ 
story. Two dead warblers were picked 
up in the lighthouse on Menagerie 
Island August 7, 1963 (34). 
*158. Yellowthroat ( Geothlypis 
trichas (Linnaeus)) 
The yellowthroat is an uncommon 
migrant and a rare summer resident. 
During the early 1940's Gilbert kept 
records and regarded the species as 
a rare summer resident (30). Shelton 
noted the species on six occasions 
in recent years: two were singing 
on July 18, 1962, one was noted on 
September 22, 1961, one on May 25, 
1962, one on May 30, 1962, and one on 
May 24, 1963 (39). On August 7, 1963 
a single dead male was picked up in 
the lighthouse on Menagerie Island (34). 
159. Wilson's Warbler ( Wilsonia 
pusilla (Wilson)) 
The Wilson's warbler is a common 
spring and fall migrant found in 
clearings and partial clearings, in 
birch-conifer type, and around beaver 
ponds and streams. In 1904 and 1905 
a specimen was taken and observations 
were made during the fall migration 
(14, 22) . Specimens were collected 
and sight records obtained on expedi¬ 
tions to the island in 1925, 1929, 
1930, and 1937 (21). Cahalane in 
1943 noted them at several locations 
in the spring ( 27) , and Gensch observed 
a single specimen in May 1946 ( 29) „ 
Shelton observed the species five times 
in 1962 and 1963, all between May 20 
and June 3 ( 39) . 
**160. Canada Warbler ( Wilsonia 
canadensis (Linnaeus)) 
This is an uncommon summer resi¬ 
dent usually associated with riparian 
brush or the aspen-birch-conifer type. 
In 1905 the species was recorded at 
Rock Harbor and there was evidence of 
nesting (14). Specimens were taken 
in 1929 and 1930 ( 21) , and sight records 
were made in 1943 (27) . Shelton re¬ 
garded the species as an occasional 
summer resident based on 10 sight 
records during the summer months, in¬ 
cluding an adult feeding young ( 39) . 
**161. American Redstart ( Setophaga 
ruticilla (Linnaeus)) 
The redstart is an uncommon 
Slimmer resident that may be seen 
around beaver dams and streams or in 
the aspen-birch-conifer type. In 1904 
and 1905, a number of sight records 
were made, specimens were collected, 
and an adult was found feeding young 
(14, 15 )■ Two specimens were also 
taken in 1930 (21) , and sight records 
were made in 1943 (27) . Gilbert in 
1946 felt that the species was a rare 
summer resident (30). During the 
early 1960's, Shelton considered this 
bird to be an occasional summer 
resident on the basis of singing 
records during the summer months 
(39) . 
47 
