For the Birds: The Birds and the Trees

Barred Owl
Photo by John Riegsecker

By Christine Southwick

As early as December, Barred Owls and Anna’s Hummingbirds start making their nests. Owls use large holes in trees, first created by a Pileated or Hairy Woodpecker; Anna’s may find a small forked branch under a weather-protecting cedar or fir branch.

Brown Creepers spiral up, and Red-breasted Nuthatches climb downward on pines searching out little hidden bugs and spiders, while Red-breasted Sapsuckers tap shallow holes in nearby large Douglas Firs to access sap.

Deciduous trees supply perches for both resident and migrating birds. These trees offer bugs, fruits, nesting sites and shelter from summer rains and strong sunlight for migrating warblers, Western Tanagers, Black-headed Grosbeaks, Red-tailed Hawks, and Cedar Waxwings to name a few.

Brown Creeper (5 inch bird)
Photo by Doug Parrott

Coniferous trees offer food, nesting opportunities, and year-round protection from the elements. Evergreens, even more than deciduous trees, provide protection from predators. Western Screech Owls and Northern Saw-whet Owls are particularly fond of local cedars.

Conifers attract a different set of birds— fewer migrating birds and more resident birds such as Chestnut-backed Chickadees, Red-breasted Nuthatches, Brown Creepers, Merlins, and our local woodpeckers— Downy, Hairy, Pileated, and Northern Flickers.

There are birds found in forests and yards with mixed types: Black-capped Chickadees, Red-breasted Sapsuckers, American Robins, and flycatchers for example. Alders and black cottonwoods are great trees for cavity nesters.

Female Pileated Woodpecker creating nest
Photo by Doug Parrott

Some birds use barren tree-tops on tall trees— Olive-sided Flycatchers, Merlins, Bald Eagles  use these trees as hunting perches to locate and capture flying prey— bugs, or other birds. Band-tailed Pigeons need tall trees for easy take-offs and landings.

Did you know that 71% of Shoreline’s canopy is located on private property (per 2011 Shoreline canopy assessment)? Trees enhance people’s yards and give character to local neighborhoods.

Female Merlin on top leader of tall tree
Photo by Barbara Deihl

Have you noticed that most of Shoreline’s streets have less than five feet of planting space between sidewalk and streets? That means that the evergreens that so many of us take for granted have to be grown on private property, not on city street right-of-ways (ROW).  Even the smaller Shore Pine grows to ten feet wide, and would obscure line-of-sight needed by drivers.

It really is up to each homeowner to keep our city green and healthy for ourselves, the birds and the other wildlife that depend on trees for roosting, eating, nesting, and shelter.

Be green, plant a tree, keep the tall ones, and help many species of birds.