Pennsylvania Game News - September 2016 - 48
Reds and Grays: Some characteristics of ruffed grouse are the
same throughout their range, but there can be variation in the
way grouse look. Grouse come in two primary color phases: red
and gray. Typically, Pennsylvania grouse fall into the "red phase."
This means the broad bands on their tail feathers are rich chestnut,
with a broad black sub-terminal band bordering the outer tail. The
red-phase body feathers, though heavily patterned, are underlain
by a rich, brown hue, giving the bird an overall mottled chestnut appearance. It's what most Pennsylvanians see when they
encounter a ruffed grouse. But there also are gray-phase grouse
in Penn's Woods. They have the same broad, black sub-terminal
band along the outer tail, but the wide barring up the length of the
tail feathers is gray. Body feathers also have a grayish tone
and, overall, the grouse appears as a mottle-gray shape in
the woods. Pennsylvania always has had a few gray-phase birds turn up in the fall
harvest. But the red phase is tremendously more common. Gray-phase grouse are
much more common in the aspen-dominated habitats of the Great Lakes states,
where their gray camouflage blends well against the gray-green of aspen trees.
Red-phase grouse show up more in oak-dominated habitats, because those birds
are superbly camouflaged against the red tone of oak forests. Better camouflage
translates to less predation and higher survival. In a sample of feathers from 100
birds two years ago, I received just one gray-phase feather from a hunter. In a
sample of nearly 500 birds last year, the percentage was lower. I might have
missed recording some, since color phase is not a priority of the feather survey.
But the low numbers give a rough idea of how low the frequency of the gray-color
morph is in the Commonwealth. Another interesting color phase is the classic
"cinnamon" phase - a bird with a wide bronze-cinnamon stripe across the tail
fan where most birds show a black stripe. Interestingly, the Game Commission's
Parts-Collection Survey also has produced some of what I call "intermediatephase" grouse - birds with a blending of chestnut and gray in the tail. So next
time you encounter a grouse, check out those colors. The results can be surprising.
- Lisa Williams, Game Birds Section Biologist
Forest Matters: What's the first thing that comes to mind when envisioning
northcentral Pennsylvania? For many people, it's the extensive forests that cover
the region's landscape. Large, connected blocks of forest provide summer-breeding-season habitat for many species of neotropical songbirds, such as the scarlet
tanager, wood thrush, black-throated blue warbler and cerulean warbler. But within
48
Table of Contents for the Digital Edition of Pennsylvania Game News - September 2016
Contents
Pennsylvania Game News - September 2016 - Intro
Pennsylvania Game News - September 2016 - Cover1
Pennsylvania Game News - September 2016 - Cover2
Pennsylvania Game News - September 2016 - Contents
Pennsylvania Game News - September 2016 - 2
Pennsylvania Game News - September 2016 - 3
Pennsylvania Game News - September 2016 - 4
Pennsylvania Game News - September 2016 - 5
Pennsylvania Game News - September 2016 - 6
Pennsylvania Game News - September 2016 - 7
Pennsylvania Game News - September 2016 - 8
Pennsylvania Game News - September 2016 - 9
Pennsylvania Game News - September 2016 - 10
Pennsylvania Game News - September 2016 - 11
Pennsylvania Game News - September 2016 - 12
Pennsylvania Game News - September 2016 - 13
Pennsylvania Game News - September 2016 - 14
Pennsylvania Game News - September 2016 - 15
Pennsylvania Game News - September 2016 - 16
Pennsylvania Game News - September 2016 - 17
Pennsylvania Game News - September 2016 - 18
Pennsylvania Game News - September 2016 - 19
Pennsylvania Game News - September 2016 - 20
Pennsylvania Game News - September 2016 - 21
Pennsylvania Game News - September 2016 - 22
Pennsylvania Game News - September 2016 - 23
Pennsylvania Game News - September 2016 - 24
Pennsylvania Game News - September 2016 - 25
Pennsylvania Game News - September 2016 - 26
Pennsylvania Game News - September 2016 - 27
Pennsylvania Game News - September 2016 - 28
Pennsylvania Game News - September 2016 - 29
Pennsylvania Game News - September 2016 - 30
Pennsylvania Game News - September 2016 - 31
Pennsylvania Game News - September 2016 - 32
Pennsylvania Game News - September 2016 - 33
Pennsylvania Game News - September 2016 - 34
Pennsylvania Game News - September 2016 - 35
Pennsylvania Game News - September 2016 - 36
Pennsylvania Game News - September 2016 - 37
Pennsylvania Game News - September 2016 - 38
Pennsylvania Game News - September 2016 - 39
Pennsylvania Game News - September 2016 - 40
Pennsylvania Game News - September 2016 - 41
Pennsylvania Game News - September 2016 - 42
Pennsylvania Game News - September 2016 - 43
Pennsylvania Game News - September 2016 - 44
Pennsylvania Game News - September 2016 - 45
Pennsylvania Game News - September 2016 - 46
Pennsylvania Game News - September 2016 - 47
Pennsylvania Game News - September 2016 - 48
Pennsylvania Game News - September 2016 - 49
Pennsylvania Game News - September 2016 - 50
Pennsylvania Game News - September 2016 - 51
Pennsylvania Game News - September 2016 - 52
Pennsylvania Game News - September 2016 - 53
Pennsylvania Game News - September 2016 - 54
Pennsylvania Game News - September 2016 - 55
Pennsylvania Game News - September 2016 - 56
Pennsylvania Game News - September 2016 - 57
Pennsylvania Game News - September 2016 - 58
Pennsylvania Game News - September 2016 - 59
Pennsylvania Game News - September 2016 - 60
Pennsylvania Game News - September 2016 - 61
Pennsylvania Game News - September 2016 - 62
Pennsylvania Game News - September 2016 - 63
Pennsylvania Game News - September 2016 - 64
Pennsylvania Game News - September 2016 - Cover3
Pennsylvania Game News - September 2016 - Cover4
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