Pennsylvania Game News - July 2015 - 49
bright yellow and their backs and tails
yellow-olive. They frequently flick
those tails showing white outer tail
feathers, which is another identifying
characteristic.
Best of all, when many fall migrating
warblers have exchanged their flashy
spring and summer feathers for dull
fall and winter ones, hooded warblers
remain their black-cowled, yellowbodied selves.
Seeing these warblers, though, is
not easy because they are understory
skulkers, often feeding on or near the
ground. They also nest close to the
ground in shrubs and saplings.
Bridget Stutchbury, who has studied
hooded warblers extensively at her
Hemlock Hill Research Station in
northwestern Pennsylvania, calls them
"forest-dependent-gap specialists."
Stutchbury writes in The Second
Atlas of Breeding Birds in Pennsylvania
that singing hooded warblers are most
abundant in deciduous forests, and they
breed in tree-fall gaps where sunshine
encourages thick undergrowth.
Unfortunately, hooded warblers also
are attracted by logged fragmented
forests, and so are brown-headed cowbirds.
In one study, by Stutchbury's student, Margaret Eng, over half the hooded warbler nests in fragmented forests
had cowbird eggs. And, as Stutchbury
writes in her excellent book, The Bird
Detective, "nesting success was so low
that their fatal attraction to partially
logged areas was actually driving the
population numbers down..."
Despite this, hooded warbler numbers in Pennsylvania have increased an
amazing 71 percent between the first
JULY 2015
and second atlasing
projects.
This is partly due to
the expansion of their core
range in western Pennsylvania, especially in the
northwest, as well as in
Pennsylvania's Ridge and
Valley Province.
Like several other bird species, such
as Carolina wrens and northern cardinals, hooded warblers are a southern
species moving steadily north into New
York and Ontario. Scientists are not
certain why, but Stutchbury says that
"maturation of forest, combined with
a possible response to climate change,
may be important factors."
Certainly, here on our mountaintop
Ridge and Valley Province home, I hear
and see more hooded warblers than I
used to.
Last summer I heard them along
Laurel Ridge Trail, beside the Far Field
Road, and along Greenbrier and Ten
Springs trails, all forest areas with a
shrubby understory.
Hooded warblers return to our
mountain from the last week in April
49
Table of Contents for the Digital Edition of Pennsylvania Game News - July 2015
Contents
Pennsylvania Game News - July 2015 - Intro
Pennsylvania Game News - July 2015 - Cover1
Pennsylvania Game News - July 2015 - Cover2
Pennsylvania Game News - July 2015 - Contents
Pennsylvania Game News - July 2015 - 2
Pennsylvania Game News - July 2015 - 3
Pennsylvania Game News - July 2015 - 4
Pennsylvania Game News - July 2015 - 5
Pennsylvania Game News - July 2015 - 6
Pennsylvania Game News - July 2015 - 7
Pennsylvania Game News - July 2015 - 8
Pennsylvania Game News - July 2015 - 9
Pennsylvania Game News - July 2015 - 10
Pennsylvania Game News - July 2015 - 11
Pennsylvania Game News - July 2015 - 12
Pennsylvania Game News - July 2015 - 13
Pennsylvania Game News - July 2015 - 14
Pennsylvania Game News - July 2015 - 15
Pennsylvania Game News - July 2015 - 16
Pennsylvania Game News - July 2015 - 17
Pennsylvania Game News - July 2015 - 18
Pennsylvania Game News - July 2015 - 19
Pennsylvania Game News - July 2015 - 20
Pennsylvania Game News - July 2015 - 21
Pennsylvania Game News - July 2015 - 22
Pennsylvania Game News - July 2015 - 23
Pennsylvania Game News - July 2015 - 24
Pennsylvania Game News - July 2015 - 25
Pennsylvania Game News - July 2015 - 26
Pennsylvania Game News - July 2015 - 27
Pennsylvania Game News - July 2015 - 28
Pennsylvania Game News - July 2015 - 29
Pennsylvania Game News - July 2015 - 30
Pennsylvania Game News - July 2015 - 31
Pennsylvania Game News - July 2015 - 32
Pennsylvania Game News - July 2015 - 33
Pennsylvania Game News - July 2015 - 34
Pennsylvania Game News - July 2015 - 35
Pennsylvania Game News - July 2015 - 36
Pennsylvania Game News - July 2015 - 37
Pennsylvania Game News - July 2015 - 38
Pennsylvania Game News - July 2015 - 39
Pennsylvania Game News - July 2015 - 40
Pennsylvania Game News - July 2015 - 41
Pennsylvania Game News - July 2015 - 42
Pennsylvania Game News - July 2015 - 43
Pennsylvania Game News - July 2015 - 44
Pennsylvania Game News - July 2015 - 45
Pennsylvania Game News - July 2015 - 46
Pennsylvania Game News - July 2015 - 47
Pennsylvania Game News - July 2015 - 48
Pennsylvania Game News - July 2015 - 49
Pennsylvania Game News - July 2015 - 50
Pennsylvania Game News - July 2015 - 51
Pennsylvania Game News - July 2015 - 52
Pennsylvania Game News - July 2015 - 53
Pennsylvania Game News - July 2015 - 54
Pennsylvania Game News - July 2015 - 55
Pennsylvania Game News - July 2015 - 56
Pennsylvania Game News - July 2015 - 57
Pennsylvania Game News - July 2015 - 58
Pennsylvania Game News - July 2015 - 59
Pennsylvania Game News - July 2015 - 60
Pennsylvania Game News - July 2015 - 61
Pennsylvania Game News - July 2015 - 62
Pennsylvania Game News - July 2015 - 63
Pennsylvania Game News - July 2015 - 64
Pennsylvania Game News - July 2015 - BB1
Pennsylvania Game News - July 2015 - BB2
Pennsylvania Game News - July 2015 - Cover3
Pennsylvania Game News - July 2015 - Cover4
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