I must confess to being an Arizona "snowbird," so I have not been experiencing the local Minnesota winter firsthand.
If you're serious about birding, all you need is a good pair of binoculars and a good guide to identification of all the bird species apt to occur in your area. Let's begin with binoculars. I can't overstate the importance of having a good quality pair to maximize your birding experience. Plan to spend between $150 and $1,000 (or more if price is no object). Most cheaper pairs are poorly made, so they don't stand up to wet weather or being dropped. Their image clarity and light transmission are also inferior and will lead to unnecessary frustration.
Right now, our fields, forests and feeders are populated mainly by the usual suspects: the permanent bird residents like chickadees, nuthatches and woodpeckers. So far, there is little evidence of irruptions of winter finches and others I spoke about last time. There are some pine siskins here and there, and today the first Bohemian waxwings were spotted not far away at the Deep Portage Learning Center, near Hackensack. We can certainly hope these are signs of things to come.
As November approaches, we are on the cusp of the season in which our local bird populations, both species and numbers, become much less predictable. During the summer nesting season, our local species are virtually the same from year to year. Permanent residents like chickadees and nuthatches are supplemented in summer by migratory species, whose individuals usually return to the precise locations where they nested the previous year. Densities are determined by each species characteristic territorial behavior.
Autumn struck quickly here. On the heels of last week's unusually cool temperatures, a number of songbird species typical of early fall migration began showing up: ruby- and golden-crowned kinglets, brown creepers and yellow-rumped warblers. The latter is always the last of the warbler species to depart, and you can expect them to become abundant in the first half of October.
Cool breezes and colorful foliage of autumn are taking hold now as summer 2018 fades into the background. In thinking back over the summer, there are several things that struck me about the seasons' birds that may also be of interest to you. For one thing, ruby-throated hummingbirds persisted for at least a week longer than I expected. I was still seeing several at our flowers and feeders on Sept. 15, though they became suddenly scarce after that, once the heat broke and colder days arrived.
This is the time to be looking for common nighthawks migrating south, especially in the couple of hours before dusk. Nighthawks are one of my favorite species because of their aerial grace and agility and their habit of flying in loose groups, enabling one to see dozens or more at once. In flight, they superficially resemble small gulls in shape, but they are dark, fast-flying and show a conspicuous white bar on the flight feathers perpendicular to the wing.
In this very quiet time of summer, most young song sparrows, black-capped chickadees, red-eyed vireos and others have left their nests and are moving about locally, still dependent to some degree on their parents for food and protection.
No matter how much we may be tempted to interpret bird behavior in human terms, birds are little more than feathered machines powered by hard-wired brain circuits. Except for a few species with more advanced brain development, like crows and ravens, learning plays only a very small role. Most everything they do is purely instinctive, including their "decisions" on nest type and location. The consequences of nest placement over millions of years of bird evolution are quite profound and have influenced other aspects of birds' reproductive biology in interesting ways.
This is the time to expect a big increase of ruby-throated hummingbirds attending your nectar feeders. Like seed-eating species, hummingbirds also switch to insect-feeding when feeding their young. By now the young are out of the nest and beginning to show up at your feeders and flowering plants in numbers, ready for doses of nectar. They will increase through August and taper off quickly toward the end of the month, as they wing their way south to Mexico for the winter.