McHenry County Audubon Society

Tree Comparisons Between Swink & Wilhelm C Values and Wildlife Food Values for the Chicago Region

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Tree Comparisons Between Swink & Wilhelm C Values and Wildlife Food Values for the Chicago Region

Most of us have had the experience of being in a very high quality natural area with many rare and conservative plant species, but not finding many animal species.  The current conservation theory is that if the plant communities are improved, the animals will follow.  This may not always be true.  This handout is designed to provide additional input for planting and restoration so that animal food sources may be taken into account in addition to purely focusing on plant quality ratings.

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Tree/Bush Species

Swink & Wilhelm #

Wildlife Value  for Food & Shelter

Box Elder

0

8      (V, s, w, sm, b, I, bud)

Black Maple

5

9      (V, s, u, lm, sm, b, I, bud)

Red Maple

7

10    (V, s, w, sm, b, I, bud, h, n)

Silver Maple

0

9      (V, s, w, wa, sm, b, I, bud)

Sugar Maple

3

9      (V, s, u, sm, b, I, b, n)

Ohio Buckeye

3

2      (L, sm, I)

Tree of Heaven

Alien

0      (L)

Black Alder

Alien

2.5   (M, s, u)

American Shadbush

9

3      (O, s, sm)

Smooth Shadbush

8

3      (O, s, sm)

Paw Paw

9

1      (L, sm)

Yellow Birch

10

8      (V, s, u, sm, b, I, bud)

River Birch

7

9      (V, s, u, w, sm, b, bud, h)

Paper Birch

10

6      (O, s, u, sm, I, bud)

Blue Beech

8

2      (L, s, w)

Bitternut Hickory

7

2.5   (M, s, sm)

Pignut Hickory

5

5.5   (M, s, sm, I, h, n)

Shagbark Hickory

5

3.5   (M, s, sm, I)

Mockernut Hickory

10

3.5   (M, s, sm, I)

Catalpa

Alien

0      (L)

Hackberry

3

7      (V, s, sm, I, h, n)

American Bittersweet (climbing)

4

1      (L, h)

Redbud

3

0      (L)

Hazelnut

5

3.5   (M, u, sm, bud)

Pagoda Dogwood

9

9      (V, u, s, w, lm, sm, b, bud)

Rough-leaved Dogwood

2

6      (O, s, u, b, h, n)

Gray Dogwood

1

6      (O, s, u, b, h, n)

Red Osier Dogwood

6

6      (O, s, u, b, h, n)

Round-leaved Dogwood

10

4      (O, s, u, b)

Cock-spur Thorn

2

6.5   (M, s, u, sm, b, lm, I)

Red Haw

2

7.5   (M, s, u, sm, b, lm, I, bud)

Pruinose Haw

2

6.5   (M, s, u, sm, b, lm, I)

Beech

5

5.5   (M, sm, I, bud, h, n)

White Ash

5

2      (L, h, n)

Black Ash

10

3      (L, s, sm, I)

Red Ash

5

4      (L. s, sm, I)

Green Ash

1

6      (L, s, sm, b, I, h, n)

Blue Ash

8

3      (L, s, sm, I)

Honey Locust

2

5      (L, s, sm, I, h, n)

Kentucky Coffee Tree

8

0      (L)

Witch Hazel

8

4      (L, s, sm, b, h)

Butternut/White Walnut

8

1      (L, sm)

Black Walnut

5

1      (L, sm)

Common Juniper

10

5      (O, s, b, h, n)

Red Cedar

2

9      (V, s, u, sm, b, bud, h, n)

European Larch

Alien

2      (L, s, u)