Bird Bio: Western Tanager

Just when I started to write off this winter as an uninteresting bird feeding season due to warm and wet conditions, our own Eli Haislip witnessed and photographed a Western Tanager at a feeding station. There have only been a handful of reported sightings in TN going all the way back to 1960 and this is the first ever reported in Davidson County! The bird appeared at a feeding station probably interested by the other bird activity. Like Bluebirds, Western Tanagers are primarily insect and fruit eaters but during winter may take advantage of “alternative” food sources like seeds out of the shell, suet, mealworms, or dried fruit.

Western Tanager range map

Western Tanager range map

This Western Tanager is truly out of its normal range which is well west of the Mississippi during the breeding season. See range map. During the non-breeding season these birds normally migrate to Central and South America, like our Ruby-throated Hummingbirds. In the past ten or twenty years, however, it has become commonplace to see some western hummingbirds, like Rufous, Anna’s, Caliope, and Black-chinned migrate to this part of the country for the winter rather than to Central and South America. Why? There’s no absolute answer but it is interesting and gives one cause to pay closer attention. This is why bird researchers and banders encourage people to leave a hummingbird feeder up during winter months.

Adult male Western Tanagers are strikingly beautiful in breeding plumage sporting a red face and throat with yellow underparts and nape, which contrasts sharply with the black back, wings, and tail. As is the case with many bird species females are much less colorful. Female W. Tanagers have a yellow head and underparts while the back is olive-gray and wings are gray with white wing bars.

Keep an eye on your feeding stations. Winter is always a time when something “different” may appear. If anything looks a little different to you stop and take a closer look with binoculars. Let us know what you see.

Next week get ready for the Great Backyard Bird Count.


Bluebirds in Winter

Recently many of you have seen Bluebirds in your yard and wondered why. The Eastern Bluebird is a year round resident in TN so it should come as no surprise that on any given day you may see them appear in your yard to take advantage of a birdbath, or check out a nestbox, or even visit a suet feeder, as I see them do with some regularity. Their main food sources consist of insects and fruit, but on cold day’s insects may be hard to find and since many other birds also take advantage of tree and shrub fruit, it too may be difficult to find. So, alternative food sources such as suet may have appeal. Other foods you can offer Bluebirds include raisins, blueberries, dried and live mealworms, which we stock year-round. In some cases, usually in very wintery conditions, Bluebirds can be seen eating sunflower and peanuts if already out of the shell. They do not possess the seed cracking ability of our usual seed eating feeder birds.

It is quite common to see Bluebirds visit nest boxes during the winter. You may even see them carry some nest material into the box. This is not actual nesting behavior but more than likely a male showing off a good place to raise young to a female. It never hurts to get a head start. We are of the opinion there is no time like today to put up a new Bluebird box. The sooner they see it the better.

And Bluebirds have been known to roost in a nest box, again, usually during more extreme winter conditions.

Keep your eyes upon the backyard and let us know what you’re seeing. Keep the water fresh and feeders clean. This is a good time of the year for an interesting bird to appear at water or food.

The Yellow-bellied Sapsucker and Wet Weather Bird feeding Help

This winter if you see a woodpecker that doesn’t quite look like any of the usual woodpeckers you regularly see you probably have a Yellow-bellied Sapsucker. A little smaller than a Red-bellied Woodpecker at about 8 ½” in length , the Sapsucker gets its name from its telltale habit of creating evenly spaced holes around a tree trunk or large shrub to release sap to feed on. The drilling does not kill the tree because the tree is not being girdled. Note: I have a Viburnum at my home that is 25 years old and riddled with Sapsucker holes. It leafs out and blooms every year.

The Sapsucker is a fairly common winter visitor across the state of TN found in residential yards as well as in woodlands. It is a handsome bird known for its red forecrown on a black and white head; the chin and throat are red on male, white on the female. The back is blackish with a varying pattern, with a white rump and large white wing patch. The underparts of the bird are yellowish, paler on a female. They clearly stand out among our usual woodpeckers.

Suet is a good choice to attract Sapsuckers, although I do see them going to fine sunflower hearts presented in a finch feeder. I use mainly peanut butter suet and see sapsuckers feed there all winter. Video Other things to try are fruit and nectar. Nectar can be offered in a standard hummingbird feeder and sapsuckers may find this a suitable supplement to tree sap. After all, many of you see Downy woodpeckers feeding on hummingbird feeders all summer long. Sapsuckers have the same long tongue that can wick nectar out of the feeder. Sapsuckers generally leave this area by mid-April and head back north to their breeding areas. Look for this bird and let us know if you see one.

Notable sightings in TN this past week include Pacific Loon at Percy Priest Lake and a

Black-chinned Hummingbird in McMinn County, TN. I spent a day at Centerhill Lake recently and saw at least a dozen Common Loons.

Winter tends to be our wet weather time of the year. Soaking rains can present a number of problems at feeders, especially feeders that contain shelled offerings like sunflower hearts, Premium Blend, shelled peanuts, and suet. Everyone who’s fed birds for any length of time has encountered the awful experience of cleaning out a feeder full of wet, ruined seed. It’s really messy and it stinks, and your investment in the more expensive seeds is lost. Try protecting your investment with one of the many weather guards, or hanging squirrel baffles, available for a variety of feeders. Hanging Squirrel Baffles are just larger versions of weather guards thus offering optimum weather protection.

Late Summer and Early Fall Hummingbirds

Wow! My hummingbird feeders have been working overtime for a week and a half now. Yesterday evening my wife and I estimated approximately 50 hummingbirds swarming the 5 visible feeders on our back porch. This morning we saw the same thing. It was hovering room only. There is no doubt that we are experiencing the peak of hummingbird activity which means we will soon begin to see numbers of hummingbirds dwindling with each day that passes. As the days grow shorter hummingbirds will instinctively feel the urge to go. For now, though, we are thoroughly enjoying the action. And I am paying very close attention in case a different kind of hummingbird appears. Recently, a friend of mine in the western most part of Bellevue had a confirmed Rufous hummingbird at her feeders.

Rufous Hummingbird

The Rufous is a summer resident of the west coast, mainly from central California all the way up into northwest Canada. Like the Ruby-throated hummingbird they migrate back to Central America and Mexico and along the Gulf coast to Florida for the winter. However, each year small numbers of Rufous hummers appear in southern states including TN. Late August and September are the months they tend to appear, or at least be seen. Some Rufous hummers have been known to stay in mid TN most of a winter.

The adult male Rufous is quite distinguishable with its rufous (reddish brown) back, flank, rump and tail. The head and crown are even darker brown to red, a red face, and bright red gorget and white breast. Pic of Male and Female Rufous

Adult females have a green back and crown with hints of rufous on the flanks. A central grouping of red spots may be visible on the white throat. Juvenile males and females will look very much like the adult female with the exception of the red spots. A lone juvenile Rufous would be difficult to notice amongst a group of Ruby-throated hummingbirds.

Rufous hummers are reportedly even more aggressive about guarding a food source than Ruby- throats, if you can imagine that.

The video was taken on my back porch this morning. Most of you do not get to see multiple hummingbirds on a feeder at the same time. In more rural areas it is quite common to see. Continue to keep your feeders clean and nectar fresh. You might be the next one to see a Rufous hummingbird.

Bat Houses and Placement Strategies

I have invested a fair amount of time researching bats the last month or so trying to learn more about the fascinating creatures sharing my yard this summer.

After last week’s blog about my recent success with bats a few customers had questions.

One customer asked “why do you think you have more bats this year. What did you do to encourage them”? The fact is I’ve done nothing different and I wish I knew why we have this surge in numbers. The bat house has been in the same place for several years. The only thing about the “Rocket” style house that’s different is Downy woodpeckers have pecked a couple of holes in it ranging in size from about 1 ½” to 3” in diameter. I hardly think that would increase the chances of a box being used.

Bats have to find new roosts on their own. They investigate new roosting opportunities while foraging at night, and they are expert at detecting crevices, cracks, and nooks and crannies that offer shelter from the elements and predators. Bats are not blind as the saying goes but in fact have sharp eye sight.

BCI (Bat Conservation International) indicates 90 percent of occupied bat houses were used within two years (with 50 percent occupancy in the first year). The rest needed three to five years for bats to move in. So, perhaps it was just time needed for bats to locate my house. Now that I’ve attracted bats to this house I am planning on putting up at least one more before next spring.

There's a lot of information about success rates of various types of bat houses and, perhaps more importantly, how they are presented. I am merely going to summarize some of the more pertinent information and would encourage you to visit www.batcon.org if you want to learn more or have enough interest to construct, or buy, a bat house to install in your yard.

Below are some basics of presenting a bat house.

Three chamber bat house.

Rocket style bat house.

Facts, Tips and Suggestions

Bat houses installed on buildings or poles are easier for bats to locate, have greater occupancy rates and are occupied two and a half times faster than those mounted on trees.

Tall designs like the multi-chamber (nursery) and rocket-style houses perform best

Occupancy in rural areas is over 60 percent, compared to 50 percent for urban and suburban areas.

According to BCI maintaining proper roost temperatures is probably the single most important factor for a successful bat house. They say interior temperatures should be warm and as stable as possible (ideally 80º F to 100º F in summer) for mother bats to raise their young. Some species, such as the Big Brown bat, prefer temperatures below 95º F, while others, such as the Little Brown bat, tolerate temperatures in excess of 100º F. This is very interesting because we always think of bats in relation to the coolness of caves but this is mostly during the hibernation months, fall through winter.

Bat house temperatures are influenced directly by the exterior color and direction faced. East-, southeast-, or south-facing are generally good bets. My Rocket house is, as you have seen, a darker color. Bat houses we sell are almost always a plain western cedar. From now on I will suggest staining the box a darker color.

Avoid placing bat houses directly above windows, doors, decks or walkways. Bat urine and guano would fall directly down to whatever is below. The urine is known to stain some finishes.

For more information about constructing, painting, installing and maintaining your bat house, please see:

The Bat House Builder's Handbook

Single chamber bat house plans

Four-chamber nursery house plans

Rocket box bat house plans