Carpenter et al. • CERULEAN WARBLER MICROHABITAT ASSOCIATIONS 
207 
Lauderdale 
Limestone 
Madison 
Colbert 
Lawrence 
Morgan^ 
Marshall 
Franklin 
lerokee 
r. ; y '7/A 
J \\ instiMi 
i • 1 
Marion 
Cullman 
Blount 
Walker 
Calhoun 
Jefferson 
® Larkin Fork 
© Walls of Jericho 
▲ Unused locations 
\WA Bankhead National Forest 
I88S3 Sipsey Wilderness Area 
I | Non-deciduous/mixed forest 
n Deciduous/mixed forest 
Historic breeding range 
FIG. 1. Sampling locations unused by Cerulean Warblers and Cerulean Warbler populations (Walls of Jericho, Larkin 
Fork, and Sipsey Wilderness) sampled in northern Alabama during the 2005 and 2006 breeding seasons. Historic range 
from Imhof (1976). 
METHODS 
Study Areas. —We studied Cerulean Warblers at 
three sites in northern Alabama during the 2005 
and 2006 breeding seasons (Fig. 1). The most 
recently discovered Cerulean Warbler populations 
are in Jackson County along Hurricane Creek in 
the Walls of Jericho tract of Skyline Wildlife 
Management Area (WMA) (34 58'N. 86 6' W) 
and on private property along Larkin Fork 
(34 57'N, 86 13'W). Both Jackson County 
populations breed in bottomland hardwood forest 
of the Mid-Cumberland Plateau where vegetation 
is dominated by mature (80+ year-old) forest 
categorized as oak and oak-hickory- (Quercus 
spp.-Carya spp.) with mixed mesophytic commu¬ 
nities restricted to valleys and coves (Braun 
1950). Additional canopy species include box 
elder (Acer negundo), elm ( Ulmus spp.). hackber- 
ry (Celtis occidentalis). tulip poplar (Liriodendron 
tuUpifera), sugar maple (Acer sacchartim), Amer¬ 
ican beech (Fagtts gnmdifolia). eastern sycamore 
(Plaianus occidentalis), and black walnut (Ju- 
glans nigra). Several maintained fields averaging 
