Dogwoods for Birds

Flowering Dogwood_fallAre you familiar with the dogwood tree? Maybe you know it for its blooming flowers in the spring, or maybe you have one in your backyard.

Dogwoods are great participants in bird feeding month. Not only do they have good looks, they also host all sorts of wildlife. Mother Nature’s cycle is an everyday reminder of how everything in nature is connected. The giant silk moths, assorted species of butterflies, bees, and other pollinating insects using the tree attract birds such as cardinals, titmice, and bluebirds. Not to mention that the trees’ red fruits last into winter, providing food all year long.

Puffy cardinalYou don’t need bird seed, bird feeders, or other accessories in order to help feed birds! By taking care of and nurturing trees, they, in turn, can provide food and shelter for the birds who need it.

Oaks, Acorns, Insects and Birds

Last year during February, which is also feeding birds month, we shared some of Charlie’s photos of birds that are commonly found at backyard bird feeders. This year we’re going to look at plants and trees that feed birds.

We’ll start with oak trees (NPC’s logo tree is a rendition of an oak). Most people will jump immediately to acorns and think about the turkeys that like acorns. While that’s true, we can’t forget about the birds, that eat the insects, that eat the acorns.

Some birds will eat the adult insects, while others eat the larval stage of insects that use acorns as hosts. I know it may not sound all that appetizing to you, but grosbeaks love the weevils that use acorns as a “home.”

Then there’s the tree itself and the insects it holds. As trees age, they often become the home to a variety of insects that live in the wood or use the wood as a host for their young. Probably the most familiar bird that will eat these insects, in various stages is the woodpecker. The rat-a-tat-tat of a woodpecker on an oak tree is fairly common in Pennsylvania.

So, while oak trees in your yard can lead to acorn missiles while you’re mowing the grass in the Fall, they also provide a variety of birds with food during different times of the year.

acorn woodpecker

Mexico Road Property Conserved!

No, the Northcentral Pennsylvania Conservancy (NPC) is not greatly expanding its coverage area, this Mexico Road is in northcentral Pennsylvania’s Montour County.

Mexico Road_Chilisquaque CreekChillisquaque Creek originates in the Muncy Hills on the Lycoming/Columbia County line, but for most of its length passes through Montour County before it finally flows into the Susquehanna River’s West Branch south of Milton. Unfortunately, for much of its length the stream is heavily impacted by agriculture.

The Montour County Conservation District has been actively working with landowners along the Creek and its tributaries to reduce the agricultural impacts and improve water quality. Many of these projects have been done through the stream restoration partnership NPC is involved with.

Mexico Road_Wheat FieldNow, with the finalization of a conservation easement on a 46 acre property with frontage on Chillisquaque Creek in Montour County NPC has acted to protect a portion of the stream. The property contains seven acres of prime agricultural soils and 37 acres of agricultural soils of statewide importance; the fields have been leased to a neighboring farmer and will remain in agricultural production.

There are approximately five acres of woodland on an excellent growing site that comprise a riparian buffer between the cropland and Chillisquaque Creek. Riparian buffers such as this protect water quality by filtering out the silt and chemicals before they enter the stream.

The easement donor’s family has owned the property for many years, although he has lived out-of-state. But, he felt it was time to move on in life and pass the property on to someone else. At the same time, housing development has been moving into what had been an area of family farms, and the owner wanted to insure that the property would not become part of a roadside housing development.

Now there is a conservation easement on the property held by NPC and the easement donor will be selling the property to a nearby farmer who is enlarging his operations. The conservation easement’s limit on development made the property more affordable for agricultural purposes. The conservation easement requires use of best management practices on cropland and protects the existing riparian buffer.

More About White-tailed Deer

We’re still talking about deer at NPC. The regular firearm season wraps up on Saturday, December 12, 2015. So, remember, if you’re going out in the woods on Saturday to enjoy the warm weather the weathermen are predicting, don’t forget fluorescent orange so you can be seen!

White-tailed Deer_snow_head downDeer can see quite a bit. They have a large range in their eyesight. The deer’s eyes are located on the side of their head. This placement gives them more than a 300 degree field of view without turning their heads.

Deer also are also fairly successful with their reproduction. When there are no natural predators and hunting is not permitted deer populations can double in one year. Given time, that number increases in only seven years one pair of deer can produce 35 deer. That’s a lot of deer.

To give you some perspective, estimates of deer population density before European settlement vary widely, but the best assessment is that there were 10-12 deer per square mile.

Wildlife biologists for various agencies and researchers at many universities are studying the populations of deer throughout Pennsylvania, the impacts deer have on forests and other habitat, and how deer are handling the changes to their habitat are various types of development and land use conversion take place.

White-tailed Deer

fluorescent orange guyThis past Monday was the beginning of antlered deer hunting season in PA. Statewide the general firearms season runs until December 12, 2015. So, if you’re going to be in the woods or on the trails Saturday it’s certainly a good idea to wear the required fluorescent orange, even if you’re not hunting. Here’s a handy graphic to help you remember that hunters are required to wear 250 square inches of fluorescent orange on their head, chest, and back combined that is visible from 360 degrees. Even if you’re not hunting, make sure hunters can see you.

Deer_NicholasPA is home to the white-tailed deer, or Odocoileus virginianus. The name, white-tailed, reflects the underside of a deer’s tail which is covered with white hair. When a deer runs it often holds its tail erect so that the white undersurface is visible.  This photo doesn’t really give you a view of the white underside, but you can see how a deer holds its tail up (Charlie took this photo on the Nicholas Easement).

White–tailed deer are ruminants and like cattle have a four chambered stomach. Deer eat without chewing their food thoroughly. Later they lie down, regurgitate what they have eaten and chew more thoroughly.

White-tailed deer are herbivores.  In winter white-tailed deer eat between four and seven pounds of woody browse (twigs and shoots) each day as well as dried leaves, fallen acorns and fungi. That’s a lot of woody browse.

rFJ3uDdtkdRbt6DWvniWom0FUPEyYNReoLRWRAhbK0cBecause of their diet of tough fibrous twigs, leaves, acorns and other vegetation, a deer’s age can be determined by checking the wear on their teeth. Wildlife biologists will examine jaw bones of harvested deer to determine the age of harvested deer. These numbers then help them estimate age class structure.

Turkeys

Turkey (11)For many Thanksgiving Day involves a turkey dinner. While many of us head to the market and buy our birds, the pilgrims would have hunted for their birds.

This hunting by the settlers had all but eliminated wild turkeys by the mid-1800s. Wild turkeys were missing from large areas of their native range by unrestricted hunting and habitat destruction. In Pennsylvania, a few managed to hang on in the Ridge and Valley region of the central portion of the state.

The creation of the Pennsylvania Game Commission, the implementation of restrictions on hunting and the forests’ gradual recovery from the widespread clearcutting of the late 1800s and early 1900s paved the way for the turkeys’ restoration.

By 2000 Pennsylvania’s wild turkey population was estimated at 400,000 birds and flocks are a common sight throughout the state, even in some suburban areas. The bestTurkey (31) turkey habitat in northcentral Pennsylvania is composed of extensive woodland interspersed with open areas or farm fields where young birds can feed on the grasshoppers and other insects that they need for proper development. Habitat is the key to healthy wildlife populations.

Turkeys have shown more tolerance for fragmented habitat (woodlots) and human disturbance than previously believed, but they still depend on forested habitats and do best with limited human activity. Habitat diversity — varying habitat types and differing ages — is the key to good turkey habitat. Turkeys seem to do best with a mix of forested, actively farmed and reverting-farmland habitat types.

In spring, turkeys eat tender greens, shoots, tubers, leftover nuts and early insects. As the weather warms up, they eat more insects, including grasshoppers, walking-sticks, beetles, weevils, dragonflies, ants and larvae. But even in summer, a majority of the diet (perhaps 90 percent) is vegetable. A wide variety of plant species are eaten, as well as a number of plant parts, including fruits, seeds, seedheads, tubers, roots, bulbs, stems, leaves, flowers and buds.

Acorns2In fall, turkeys eat mast (beechnuts, acorns); fruits (dogwood, grape, cherry, gum, thornapple); and seeds (grasses and sedges, ash, corn, oats, weeds). During winter, they rely on seeds, nuts and fruits left over from autumn, and on green plants, crustaceans and insect larvae found in and around spring seeps where groundwater emerges along a hillside or in a flat. Temperature of this water is above freezing, so the seeps remain open all winter, providing food for turkeys and other wildlife.

A turkey often scratches for its food, kicking forest duff and leaves behind. If the bird finds an acorn, it picks up the nut in its beak, straightens its neck, and swallows. The nut is stored in the bird’s crop, a flexible “bag” in which juices and body heat work to soften it. Then the nut passes into the gizzard, an enlarged, thick-walled section of the food canal that contains small stones and gravel called grit. Strong muscles use the grit to grind down the acorn.

Peaking Now

Sugar Maple_AutumnThe TV weather folks give reports on more than just the weather, they also give daily updates on when and where the fall foliage colors are peaking. But, the peak varies from place to place and by the day. However, the most brilliant fall colors tend to occur where sugar maple grows which is why the best fall colors tend to occur in the northern portion of our region where sugar maple is a common tree. The color displayed by sugar maple varies from pale yellow to bright red, but most commonly varies from golden yellow to orange. Sugar maple is the tree that provides maple syrup and bowling alleys in addition to a feast for the eyes.

Pignut Hickory_FallIt’s not just sugar maple that colors the hillsides in the middle of fall foliage season, many other trees are at the peak of their color now. In the southern part of our region the hickories are now displaying their glowing yellow color. There are four common hickories in northcentral Pennsylvania: bitternut, named for the flavor of its nuts; pignut, so called because its small very hard nut were deemed fit only to feed to hogs; mockernut, the thick hulls of its nuts conceal a small nut thus mocking anyone who thinks they’ve found a large nut; and shagbark which derives its name from its usually very long loose scaly bark.

Enjoy the peak of fall colors they’ll soon fade to the grays and browns of late fall.

Fast Changing

Red Maple_fallThe season progresses more rapidly as September passes. Many of the birches and walnuts are leafless as other species of trees begin to turn color. This is the time for the reds to make themselves obvious as red maple leaves turn color. Red maple is aptly named since the leaves turn red in the fall and the new growth from last spring, the samaras (poly-noses) bearing the seeds and the winter buds are red. Red maple grows almost everywhere in our area from the highest ridges to lowland wetlands.

Also showing its now red leaves is flowering dogwood, that small tree which is often planted as an ornamental in landscaping. Those trees usually display pink Flowering Dogwood_fallflowers in the spring, but the wild flowering dogwoods growing in the woodlands in the southern part of our area are almost universally white flowered, although sometimes with a pinkish tinge. At the same time the leaves change from green to red, flowering dogwood’s fruit ripens to a brilliant red. The fruits are eaten by chipmunks, gray squirrels and many species of birds.

Changing of the Leaves

ButternutSome leaves begin changing in mid to late August, but as the season progresses into September more and more trees begin changing color. Among the first to change are black walnut and its close, but much less common, relative butternut (photo on the right). These species tend to set leaves late in the spring and lose their leaves early in the autumn but they grow rapidly nonetheless. The leaves of both species normally turn pale yellow or tan and fall soon after.
Black, yellow and white birch leaves (below) also normally turn color early in the fall and also become yellow, but a much brighter yellow than either walnut or butternut. In our area, black birch is Birch, Blackby far the most common of the birches, growing in both moist and dry sites and frequently seeding in on sites disturbed by logging or wind throw. Here, yellow birch is confined to cool moist sites, usually in deep valleys or high elevation wetlands. White birch is close to the southern limit of its rage in northcentral Pennsylvania where it is most commonly found as scattered individuals on ridgetops or where severe forest fires killed most other trees.

Colors, We’ll See Colors

There are signs of autumn everywhere. For many the true indication is the turning of trees’ leaves from green to various shades of red, yellow, orange and brown.

Birch, BlackLook at the hillsides and you may see the first yellow leaves appearing on the birch trees; black, yellow and white birch are among the first trees to change color – frequently beginning to change in mid to late August and reaching their peak in early to mid-September.

And what causes the trees to change color? Some people believe it’s a frost – but it’s not. What causes tree leaves to change color is actually the shortening days. And the colors are the result of pigments in the leaves:
• Chlorophyll, the pigment that gives leaves their green color. It is where photosynthesis occurs whereby plants use sunlight to manufacture sugars. Toward the end of the growing season chlorophyll is broken down and no more is produced.
• Carotenoids that produce the yellow, orange, and brown colors in other plants like corn, bananas, carrots, and daffodils. These pigments are also present in leaves throughout the summer.
• Anthocyanins, are reddish pigments which color cranberries, apples, cherries and strawberries. These pigments form in the leaves in late summer and fall as the leaves prepare to fall from the tree and sugars are trapped in the leaves.

When all the chlorophyll in the leaves is destroyed the carotenoids and anthocyanins are revealed and with that the fall coloration is created.

Warm, sunny days and cool, but not freezing, nights usually produces the most glorious red and orange colors. That’s because during the day a lot of sugars are produced in the leaf but the cool nights and closing of the vessels between the leaf and twig keep the sugars in the leaf. A lot of sugar and a lot of light produce bright anthocyanin pigments. Because the yellow and brown pigments are always present in leaves, the yellow and gold colors don’t vary much from year to year.