Bird Bio

Bird Bio: Great Egret

Now that backyard birding has settled down considerably and will be slower for a couple of months you might consider taking your binoculars and looking for some birds that can be seen with a little effort, especially if you spend some time near water. Streams, rivers, ponds, lakes, and areas that temporarily collect water after hard rains are a great source of birdwatching for shorebirds on the move.

A shorebird that can be seen with regularity between August and early October is the Great Egret. This white heron at 38” in length is not quite as big as a Great Blue Heron, which can be as long as 50”, but an impressive bird nonetheless. It’s all white plumage makes this bird stand out from great distances but be sure to look through binoculars to see its heavy yellow bill and black legs. The population of this bird was greatly reduced by “plume hunters” at the turn of the century but is now recovered and its range is now apparently expanding.

Great Egrets hunt very similarly to the GB Heron stalking prey on edges of or in shallow water, catching fish, frogs, and insects.

This is just one of the many birds that are now migrating through TN. Be sure and bring your binoculars along with any of your outdoor plans. Good birdwatching opportunities can happen wherever you may be. Have a good weekend.

Goldfinches Beginning to Nest

While many of our most familiar backyard birds are near the end, or have already concluded, their breeding season, for the American Goldfinch it is just beginning.  Many of you have already seen a reduction in goldfinch numbers at your feeders as they begin to move away from feeders toward nesting areas. Goldfinches typically nest in June and July when certain nest materials, and more of their food sources, become available. 

The goldfinch’s main natural habitats are weedy fields and floodplains, where plants such as thistles and asters are common.  So, if you live close to one of these types of areas you may continue to see good numbers of goldfinches at your feeders.  If you live in a more forested area you will likely see far less goldfinches until they finish nesting.  So, don’t be concerned that something has happened to “your” goldfinches or you’ve done something wrong. They are simply transitioning into their nesting phase and will return to feeders in due time. 

The male and female locate a suitable nest site together. Nests are often near water.  At Hidden Lakes Park on McCrory Ln, which borders the Harpeth River, goldfinch nests are common to see.

The male may bring nest materials but the female builds the nest, usually in a shrub or sapling in a fairly open setting rather than in forest interior. The nest is often built high in a shrub, where two or three vertical branches join; usually shaded by clusters of leaves from above, but often open and visible from below. 

The nest is an open cup of rootlets and plant fibers lined with plant down, woven so tightly that it can hold water. The female bonds the foundation to supporting branches using spider silk, and makes a downy lining often using the fluffy “pappus” material taken from the same types of seedheads that goldfinches feed on. It takes the female about 6 days to build the nest. The finished nest is about 3 inches across on the outside and 2-4.5 inches high.

The female incubates about 95% of the time and takes 10-12 days. The male brings food to the female while she incubates.  The young leave the nest after 11-17 days. Both sexes tend to the young and are fed a regurgitated milky seed pulp.  Insects are rarely part of their diet.

Goldfinches are monogamous per year but commonly change mates between years.  

American Goldfinch

Breeding male goldfinch.

Breeding female goldfinch.

Non-breeding male goldfinch.

Both male and female feed young.

Next to Bluebirds and Hummingbirds the American Goldfinch is perhaps the most discussed bird at The Wood Thrush Shop. We’ve been getting a lot of Goldfinch comments of late. This finch is a year round species here in TN. Males, in their spring-summer breeding plumage, are bright yellow with a black forehead, black wings with white wingbars, and white patches above and below the tail. Adult females are duller yellow beneath, olive above. In winter both males and females are a drab olive, with hints of yellow, and the ever present black wings with pale wingbars.

Mostly what we hear from customers are questions, “where have the Goldfinches gone” or “why can I not attract Goldfinches”? As seemingly simple as these questions are there are no simple answers. Nor is there much we can suggest to help attract more Goldfinches. When it comes to attracting Goldfinches patience and understanding is important. So, why are Goldfinches so different from say, Chickadees or Cardinals? Goldfinches are an almost exclusively seed eater which means there is a ready food supply everywhere they go and in almost every season of the year. It also explains there preference for fields and meadows where there are lots of native seed producing plants. To further complicate matters Goldfinches are on the move much of the time. During the non-breeding seasons, winter, spring and fall, there are great movements by these birds which may explain their inconsistent presence at feeders. Many of us see more at the feeders in the winter when northern populations have come here to winter.

Goldfinches love a variety of seeds including sunflower, safflower, and Nyjer (thistle) at feeders. I believe sunflower is their preferred seed at feeders. I use the fine sunflower hearts in my finch feeder and do quite well attracting Goldfinches. Nyjer for finch feeders is not a seed native to this country. It is grown primarily in Africa, particularly Ethiopia and Kenya, as well as in India, Nepal, and Myanmar. This explains why it’s a little pricier. They will come to practically any type of feeder, too. They will even feed on the ground. In winter when I typically get more Goldfinches I will spread sunflower seed on my driveway and be treated to 50 or more Goldfinches. Keeping your feeders topped off is always recommended as Goldfinches want to feed as a group. Waiting for them to finish what’s in the feeder will backfire because if what’s remaining in the feeder accommodates only two birds they likely will move on. Many times customers will be fooled into thinking there’s’ something wrong with the remaining seed. Shake the feeder to see if the seed is dry and loose. If it is just top it off. Your results should be better.

Planting flowers like Zinnias, Coneflower, and Rudbeckia, that produce seeds they like, is a good way to get them to your yard in summer and fall but not necessarily your feeders. There are times they show a distinct preference for natural seed. The goldfinch’s main natural habitats are weedy fields and floodplains, where plants such as thistles and asters are common. They’re also found in wooded areas, and suburban backyards. American Goldfinches can be found at feeders any time of year, but most abundantly during winter.

Interesting Facts

• American Goldfinches breed later than most North American birds. They wait until June or July to nest when milkweed, thistle, and other plants have produced their fibrous seeds, which goldfinches incorporate into their nests and also feed their young.

• Goldfinches are among the strictest vegetarians in the bird world, selecting an entirely vegetable diet and only inadvertently swallowing an occasional insect.

• When Brown-headed Cowbirds lay eggs in an American Goldfinch nest, the cowbird egg may hatch but the nestling seldom survives longer than a few days. The cowbird chick simply can’t survive on the all-seed diet that goldfinches feed their young.

• Because of the nest material they use and how tightly it is woven a Goldfinch nest has been known to hold water.


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.


Bird Bio: Loggerhead Shrike

The recent sightings of a Loggerhead Shrike in Franklin is the catalyst for this weeks blog. Shrikes are a very interesting species and have earned the nickname of “butcher bird” because it sometimes impales its prey on thorns and barbed wire fences. The Northern Shrike has only been reported one time in the state of TN back in 1964 so its not likely you would ever see them. The Loggerhead Shrike, however, is a year-round resident found in fields and open spaces with overgrown fencerows. The presence of very thorny trees like the Honeylocust and Black Locust may be a good draw as well because of the Shrikes habit of impaling prey.

The Loggerhead Shrike is considered a songbird, however, it has a hook-tipped bill and exhibits hawklike behavior. They perch on tree tips and tops, and wires for long periods of time watching for an opportunity to catch its prey which consists of insects, lizards, mice, and small birds. And as mentioned they will sometimes impale their prey on thorns caching it for later consumption.

The Loggerhead Shrike is no larger than a Robin at about 9” in length. They have a proportionately large head with a powerful, hooked bill. They are black and white, with a gray back and cap and prominent black mask. In flight they flash patches of white. My only sighting of this bird occurred in Franklin on a golf course several years ago. At first glance of the bird at some distance I thought mockingbird because of the markings, but upon observation with binoculars I was excited to see my first and, still, only Loggerhead Shrike.

Happy New Year to all. A good New Year’s resolution is to see some new birds. Get out there with your binoculars and do some birdwatching.