Another bird that benefits from the same habitat is the threatened cerulean warbler
, which is thought to use shade farms as migratory stopover sites and as prime living space.
Those species that commonly breed in cooler, more northerly, mainly coniferous forests, such as Blue-headed Vireo, Winter Wren, Magnolia Warbler
, Black-throated Green Warbler
, Blackburnian Warbler
, Canada Warbler
, Dark-eyed Junco, and Purple Finch, were found in pine plantations, mixed pine-deciduous woods, and the hemlock-deciduous forests in the gorges and ravines of the Pierson Creek and Stebbins Run watersheds.
Black-throated blue warblers
(Dendroica caerulescens) forage and nest in the understory of hardwood forests in Michigan's Upper Peninsula; much of the habitat has been altered by extensive browsing by white-tailed deer (Odocoileus virginianus).
Whooping Crane Red-Cockaded Woodpecker Golden-Cheeked Warbler
Wood Stork Attwater's Prairie Chicken
Truth is, I had a bad case of the blues, meaning I really wanted a cerulean warbler
. I'd put eyes on one just once before, at Indiana Dunes State Park in 1999, long before Indiana Audubon began hosting a festival there.
A text message then informed me that if I'd turned left from the car park instead of right, I'd probably be watching a Savi's Warbler
found that morning.
If you do hear a warbler
in full voice, try to spot it immediately because once the trees and bushes have fully leafed over these birds will be difficult to spot.
A willow warbler
weighs in at less than an ounce albeit that in advance of this marathon, these fairly anonymous little brown birds with a hint of olive green about them, must gorge themselves upon the insect food that represents their entire food requirement.
For nearly 30 years, American Forests has been restoring the Michigan jack pine forests the Kirtland's warbler
depends on for habitat.
Over the past 60-odd years they have now started to nest and breed here and the Lancashire Bird Atlas tells me that they have overtaken garden warblers
as our most common Old World Warbler
in the North West.
We estimated tree preferences each year for the four most abundant species that had at least 30 observations each year: Yellow-rumped Warbler
, American Redstart (Setophaga ruticilla), Warbling Vireo (Vireo gilvus), and Baltimore Oriole (Icterus galbula).
However, unlike other species with performance-encoded songs (for example Yellow Warbler
, Grace's Warbler
, Pine Warbler
, and American Redstarts), song bouts delivered in the context of Type II singing by Yellow-rumped Warblers
were not composed of a medley of different songs (Lemon and others 1975; Staicer 1989; Spector 1991; Price and Crawford 2013).