Seeing a “new” bird or animal is an unexpected thrill. We have enjoyed two new bird sightings already this summer.

The first sighting happened recently in Franconia, when an unusual mewing sound caught our attention. The mewing turned out to be birds!

A woodpecker like bird was scampering up and down a white birch tree next to the high deck, just six feet away. Its coloring differed from that of hairy or downy woodpeckers. A quick check in our bird book confirmed we were observing a yellow bellied sapsucker, a member of the woodpecker family.

The sapsucker was industriously drilling rows of holes to get the sweet birch sap. Later we saw several more drilling away. These two had no red markings on their heads and speckled buff breasts the markings of juveniles. They had already learned to drill for food and were happily sucking out the birch sap.

Next we noticed bees flying about. They were obviously attracted to the sweet sap, too. And could it be? Yes, a humming bird! What a fabulous example of the interdependence of the flora and fauna of nature a little ecosystem right in front of our eyes, like a TV screen, but real. Watching this intertwined ecosystem reminded me of a favorite paperback book, Forest and Thicket, Trees, Shrubs and Wildflowers of Eastern North America, by John Eastman, with beautiful drawings by Amelia Hansen. Eastman not only describes a tree or plant, but gives its “lifestyle.” For white birch he notes that it “does not thrive where average July temperatures exceed 70 degrees Fahrenheit.” He also relates fascinating information about each plant’s “associates” and “lore.”

Eastman confirmed our amazing sighting in his chapter about white birch trees: “[A] pitted area of holes drilled in regular horizontal rows, usually fairly high on the tree, indicates the feeding site of the yellow bellied sapsucker. After drilling the holes, the sapsucker returns at intervals to lick up the exuded sap and any insects attracted to the flow. The ruby throated hummingbird is a secondary feeder. Though not the only tree ‘tapped’ by sapsuckers, white birch is a favorite.” I was curious to know more about sapsuckers. I discovered they breed north of the Nashua Manchester line here in New Hampshire. They like to nest in second growth woods.

White birch and aspen are tree species that sprout first in a cut forest, because they thrive in full sun. Sapsuckers like these pioneer tree species, but they need the older trees that are beginning to decline and have rotten centers. They excavate or dig out the punky centers for hidden and well protected nest sites. Obviously pecking holes in trees is the woodpecker’s unique adaptation. Woodpeckers may use the same tree for several years, but they excavate new nest cavities each year. They usually rear a clutch of five or six, incubating the eggs for 12 to 13 days and nesting for 24 and 26 days. In addition to sucking sap, they eat inner bark, insects, and fruits and berries. Our second “new” bird nested in the shrubbery next to our house in Amherst. Wood thrushes made a nest at the top of an overgrown lilac under our bedroom window.

We were alerted to the nesting activity by the lovely, flute like song of the thrushes. They started singing at sunrise, giving us a melodious alarm clock for a week or so. Then they moved on to other behavior that didn’t require singing perhaps incubation is quiet time.

Soon there were babies in the nest I could barely see by peeking through the dense cover of leaves. With the continuous rain this summer, the roof of leaves proved strategic. In early July we finally had a sunny Saturday. Not only were baby swallows fledging from their nest in the box in the garden, but we also heard lots of commotion near the thrush nest. A baby thrush was perched on a branch near the nest making a loud racket. Mother thrush paid no attention to the little ball of fluff, which eventually figured out how to flap its wings in the damp air. I didn’t pay enough attention either. Soon it was gone along with its mother, and the nest was empty.

I’ve just learned that bird nests next to houses are a bad idea because of bird mites. The life cycle of the mites coincides with the nesting schedule, and the mite population can explode just as the birds leave. With the birds gone, the mites can invade a home and bite humans to test them as potential hosts.

So I will cut back my lilac tree to shrub size to eliminate the perfect nesting site. The thrushes will find another location nearby, although maybe not so perfect for bird watching.

By Anne Krantz, Master Gardener and Tree Steward