Food for Flight

As usual, the year is flying by. It is now August. For many birds, nesting is complete and the young have dispersed. The days are starting to get shorter and the winds are coming out of the north. Instinct tells them it is time to head south for the winter.

Jewelweed (Margo D. Beller)

Birds travel light, literally and figuratively. A hummingbird weighs less than an ounce. An osprey can weigh up to four pounds. Even the biggest birds can be thrown off course by high winds and heavy rains, making their travel perilous, especially when they have to fly over open water such as the Gulf of Mexico or the Atlantic Ocean.

They also don't travel with a cooler filled with snacks. They have to depend on whatever foods they can find when they land after a day (diurnal flyers such as hawks) or night (most small birds including warblers) of flying. For the osprey, that means fish. For other raptors, that means small mammals or birds (which is why most small birds travel at night). For the smaller birds, that includes insects, the seeds and fruits ripening now, and whatever they might find at people's feeders.

The privet shrubs in my backyard are filled with small, round, black berries favored by such fruit eaters as robins, mockingbirds, catbirds and cedar waxwings. The wild cherry tree has also attracted birds because it is fruiting, which is good because the viburnum and dogwood are not going to provide much to eat this fall. There are also red berries all over the yew hedge.

In my travels I have seen plenty of food Mother Nature has put out for migrating birds.

Hop hornbeam with hanging seeds (Margo D. Beller)

There's the hop hornbeam, for instance. I would never have even noticed this tree had I not almost walked into a low-hanging branch and noticed the seeds dangling from it. Once I identified this tree I found it everywhere - on hillsides, along river banks. It is an understory tree, meaning it grows below the canopy of larger trees. Apparently it thrives on being left alone, which may be why they were planted years ago by municipal parks departments. I've seen cardinals and cedar waxwings eating the seeds from this tree. 

There are also nectar-filled or seeding flowers. Thistle and goldenrod bloom now, and when they go to seed they will feed goldfinches, sparrows and other seed eaters. Weeds are also a wonderful source of seeds, including the ragweed that torments my sinuses and always seems to come back no matter how much it is mowed or pulled out.

The cardinal flower has a gentle spike of red flower and prefers moist areas, which is why I see it near streams and why I've had no luck growing it in my garden. Hummingbirds are attracted by the color and feed on the pollen. Another hummingbird favorite is jewelweed. This one also favors wet areas along stream banks or bogs but unlike the cardinal flower it is orange-yellow. However, its flower is a trumpet that attracts the hummingbird. Apparently it is also used to make medicine, but thankfully no one has touched the stands of jewelweed I've seen attracting hummingbirds, bees and insects.

Cardinal flower (Margo D. Beller)

These food sources are not everywhere, of course. The insect population is in decline, which will have a devastating effect not only on birds but on humans because most of our food needs to be pollinated by bees and insects when it is first flowering. Ocean waters are much warmer than they should be this summer. According to NOAA, we are in an El Nino year. That means:

Our global climate models are predicting that the warmer-than-average Pacific ocean conditions will not only last through the winter, but continue to increase. There is a good chance—approximately 2 in 3—that the peak Oceanic Niño Index this winter will match or exceed 1.5 °C, our informal threshold for a “strong” El Niño event.

El Nino, according to NOAA, is a "naturally occurring climate pattern associated with warming of the ocean surface temperatures in the central and eastern tropical Pacific Ocean, which can significantly influence weather patterns, ocean conditions, and marine fisheries worldwide."

When the Pacific Northwest is as hot as Houston, when wildfires destroy millions of acres of forests and homes, when parts of the U.S. have not gone below 100 degrees F in months, when New England is hit with tornadoes, when the mid-Atlantic states are hit by several 100-year floods in one season, what is a "naturally occurring climate pattern" anymore?

I just hope the birds make it.