Seasonal Bird News

Rose-breasted grosbeaks are back!

Rose-breasted Grosbeaks and Continued Feeder Activity

 

Isaac Newton is credited with the saying “what goes up must come down”, and while he had no idea what a Rose-breasted grosbeak was, the saying holds true for them as well as other migratory birds. All neo-tropical migrants that pass through Tennessee on their journey north during the spring migration will again pass through during fall. This is great for us bird lovers, because it gives us a chance to spot species we might have missed earlier in the year, such as Baltimore oriole, Rose-breasted grosbeak, and numerous species of warblers.

Non-breeding Tennessee warbler

Ironically, this member of the warbler family is only seen in Tennessee during Spring and Fall Migration, instead breeding in Canada and wintering in Central and South America.

Reports have begun trickling in of Rose-breasted grosbeaks on feeders, so keep your bird feeders filled and your eyes and ears open for these colorful visitors. While not as prevalent in the fall as in the spring, Rose-breasted grosbeaks are known to visit feeders during fall migration. This year, as of writing this, we have already received three reported sightings. It is possible that with the last several months of dry weather, there may be less of an abundance of food available in the wild and this will drive them to visit feeders in greater numbers. Males are hard to miss with their striking black and white appearance, deep red throat, and substantial seed busting bill. Females are less colorful, and have been described as looking like a “House finch on steroids”. Juvenile males are an interesting combination of both in terms of appearance. Fortunately for us, these seed eaters are not picky, and will happily gorge themselves on sunflower (in and out of the shell), safflower, and peanuts.

“They’re eating me out of house and home!” is a saying we hear so often in the spring and early summer that it all but works its way into our dreams. However, come late September, this is not something we expect to hear. We are generally skeptical of reports of “busy” feeder activity this time of year, as time and again we can say with confidence that September and October are the slowest feeder months of the year. However, this year seems to be different. In addition to feedback from multiple customers of good activity feeders, we have been noticing this at our own feeding stations. A quick glance out my window at my platform feeder before coming in to the store rewarded me with the sight of 3 Carolina chickadees and 3 Tufted titmice visiting simultaneously. I looked out at my suet log feeder and had 2 White-breasted nuthatch feeding. While seeing 8 songbirds on two feeders is far from monumental, it is more than I would expect for a warm late September morning.

 

 

 

Copper Anti-microbial Birdbath Disk

Help keep your bath clean and healthy with the purifying qualities of pure copper. Chemical free all natural 4" diameter copper water purification disk is 99.9% pure American made copper. It’s designed to sit up off the floor of the bath with 3 “feet” to ensure that the entire surface area of the disk is in contact with the bath water insuring maximum benefit. The disk is made here in the USA with copper sourced from Revere Copper, Rome New York. Tarnished copper does not lose any of its beneficial qualities. Simply place in any bird bath for chemical free water purification.

 The antimicrobial properties of copper surfaces are firmly established.

 Copper has been used since ancient times to disinfect and purify water. In modern times many scientific studies have proven that copper alloys possess excellent potential in controlling the spread of infectious diseases. In fact, after rigorous testing, the U.S. Environmental Protection Agency registered copper alloys as antimicrobial public health materials.

 Importantly, research by the University of Southampton, UK, shows that copper can virtually eliminate the Influenza A virus within six hours of exposure. This is an especially important finding because a member of this virus family is the virulent Avian Flu strain.

 In addition to eliminating bacteria and viruses, copper has also been proven to destroy mold and algae. Adding an Erva Anti-Microbial Bird Bath Disk to your bird baths will facilitate cleansing and contribute to the health and safety of your visiting birds by eliminating water-borne pathogens.

How it works: The bactericidal activity of copper is mainly attributed to the release of ions, which are recognized by various microorganisms as an essential nutrient—and allowed to enter the cell. Once inside they affect the integrity of the membrane, generate intracellular oxidative stress and are genotoxic, meaning that the ions impede the cell from breathing, eating, digesting, or creating energy— resulting in the death of the microorganism. Antimicrobial copper continuously kills pathogens, even when tarnished.

Fall Migration Notes

Fall Migration, and Bluebirds

Fall Migration is underway, and it is making birding fun in the Mid-State! While birding along the Cumberland River this past weekend, I spotted several Great Egrets working the marshy sections off the main channel. Whilst exploring a pull-off near Cheatham Dam, my attention was drawn to a large Cyprus tree where I noticed several Yellow-rumped Warblers flitting between the roots. These are just a few of the numerous species that are passing through our area every day. Rose-breasted Grosbeak, Ruby-throated Hummingbird, Chimney Swift, Common Nighthawk, Summer Tanager are also being seen and heard daily.

Tennessee Warbler

Photo by Eli Haislip

Lights Out Program:

Did you know that many species actually migrate under the cover of darkness? According to BirdCast, the list of expected nocturnal migrants for this area includes Yellow-rumped Warbler, Summer Tanager, Eastern Wood-Pewee, Black-throated Green Warbler, Yellow-bellied Sapsucker, and many other species. In Davidson County alone on the night of October 1st into the morning of October 2nd, BirdCast, using weather radar, was able to detect an estimated 8,900,000 birds flying overhead! But how are these birds able to traverse distances of thousands of miles, mostly at night? Certain species, such as Indigo Buntings, have been proven to navigate using the stars! There is also evidence showing that thanks to short-lived molecules found in the bird’s eyes, known as radical pairs, they are actually able to visualize Earth’s magnetic field! Unfortunately, despite these incredible adaptations, birds migrating at night are extremely susceptible to light pollution. They can become disoriented and confused by bright lights, and with many song birds flying between 500-2500 feet, this can lead to collisions with buildings and electrical/communication towers which usually prove fatal.

Fortunately, there are things we can do to help. During peak migration months (September-early November) turning off non-essential lights from 11:00PM-6:00AM can greatly help. In addition, closing your blinds at night, dimming or pointing outdoor lighting down, and turning off outdoor decorative lighting can all have a positive impact in helping migratory birds reach their destination.

Bluebirds Exploring Boxes

Yesterday morning as I was getting into my car, I noticed a flurry of activity at my bluebird box. There was a pair of bluebirds taking turns perching on the box and looking inside it. This is actually quite a common occurrence this time of year, with us receiving multiple reports each fall of Bluebirds checking out boxes. We are not entirely sure what causes them to do this, although it could be a variety of factors; similar amounts of daylight to the spring, searching for prospective future nest sites, or identifying suitable spots to shelter on cold winter nights. Remember, it is always a good practice to clean the box after each nesting, so clean those boxes and keep your eyes peeled for this throwback to spring.

Eastern Bluebirds checking out a bluebird box on an October morning

Photo by Eli Haislip

Attracting the “non” Feeder Birds

Fall Migration is getting underway and while your seed birdfeeders will typically slow down now through October, birdwatching in the area will become significantly more interesting. Have your binoculars with you and ready because Warblers, Tanagers, Orioles, Grosbeaks, and Flycatchers are pouring through middle Tennessee stopping to feed in the mornings on insects and berries.

Mornings are the best time to see lots of different species because many of the migrants are traveling at night. They settle down to rest and feed in the morning. And mornings after a storm tend to be even better. Make time to visit one of the many great local birdwatching areas this fall to see some birds you may not have seen before. The usual local hot spots include:

Habitat, of course, is the main attractant for these traveling birds so to attract these typically “non” feeder birds to your yard key elements like native plants and trees which produce appealing berries must be available. Native plants also attract native insects which are an especially important food source for these long distance travelers. Water is another key element to attracting more variety of birds and relatively easy to offer. Reliable, clean, water sources are a sure way to “catch” a new bird in your yard. Eli caught this threesome of nonbreeding male Scarlet Tanagers enjoying a fountain in his yard.

While water in a traditional birdbath is attractive, moving water is irresistible. Dripping, rippling, gurgling, and splashing means cooler, fresher water is present. The birds will definitely notice. Adding the element of moving water will make your birdbath even more appealing. There are many ways to add moving water to your existing birdbath, such as drippers, water wigglers, misters, and small solar fountains that circulate water. These items are in stock at the store.

Keep in mind some basics of offering water in your yard for best results.

  • Remember to refresh your birdbath every couple of days.

  • Place your birdbath near trees or shrubs if possible. In summer, shade is always a better option than sun. A birdbath in full sun and in an open space usually equals very warm water and little or no bird activity, and more maintenance due to algae growth. A shady location slows evaporation and keeps the water cooler and fresher longer. With available cover nearby birds can escape to cover if interrupted by a potential threat.

If you are interested in offering birds a source of water, but don’t want to refill it daily due to evaporation, we have a solution for you! The Switch ‘n Swap 48oz Water Feeder essentially acts in the same way as a hummingbird feeder, however with a base designed simply for water. They are extremely easy to clean, self filling, and with the 48oz reservoir, they will last days in between refills. They are also a great option if you travel often for short periods but want to provide your birds a clean source of water. Not to mention, they are also generally easy to keep mosquito larvae out of. Simply dump it and let it refill itself! Price is $14 before tax.

Purple Martin Roost in Nashville

Somehow, it is already that time of year again. August brings with it roosting colonies of Purple martins to downtown Nashville numbering in the hundreds of thousands. Each year, these remarkable birds amass in and around downtown for several weeks before pushing south through Central and into South America where they will spend their winter. According to Warner Park B.I.R.D. program, this year’s roost has reached its peak size of an estimated 200,000 birds! So far this year, the best places to see the spectacle are the trees around Nissan Stadium, as well as at 3rd Ave. and Church St. Numbers may continue to increase through early August with birds remaining through September. For additional information, check out this article by the Nature Conservancy!

Wood Thrush Notes

Hummingbird Activity to Increase Soon

In the next couple of weeks we should all begin to see more hummingbird activity at our feeders.  I’ve seen considerably more just in the past few days.  Hummingbird feeders will be significantly more important to our Ruby-throated hummingbirds in the coming weeks and months as they conclude nesting and begin feeding heavily in preparation for fall migration.  Most of us do not see a lot of hummingbird activity until mid-July as females are fully involved with nesting responsibilities and the males are guarding their territory and food sources.  Hummer feeders are just not that important to them during this time as nectar from flowers and the insects they consume are readily available.  People often mistakenly think hummingbirds NEED our feeders.  They don’t, but will take advantage of them when the time is right and the feeder and nectar are in good condition.  Making sure your feeders are clean and nectar is fresh is always important but especially now when temperatures are high and as birds begin to use them more. 

  Ruby-throated Hummingbirds (RTH), like many migrant birds, go through hyperphagia prior to migration, meaning they eat almost continuously. They ramp up their consumption of nectar from plants and sugar water from feeders while consuming large quantities of tiny insects that are full of fats and proteins. The sugar is used up almost instantly during daily activities but the protein from insects helps strengthen their flight muscles. All the energy-rich yellow fat accumulates in little storage pockets which are visible when the feathers are gently pushed aside, like when a licensed bander has one in hand.

Male Ruby-throated Hummingbird

Female Ruby-throated Hummingbird

Hummingbird fat pockets

An adult male RTH will weigh approximately 3 grams during summer but put on as much as 2.5 grams of weight by the time it is ready to head south.  They will nearly double their weight during hyperphagia.

So, if you haven’t been paying attention to your feeders because of lack of activity make sure your feeders are clean and you have fresh nectar. August and September are THE busiest hummingbird feeding months here in Middle TN so be prepared. 

The proper nectar formula is 4 parts water to 1 part sugar.  Do not use brown, or raw sugar, and never use honey.  Regular white table sugar is best.  If you are making a small amount, like a cup, boiling the water is unnecessary.  Thoroughly stir the sugar until it is completely dissolved and the water is clear.  To make larger quantities it makes sense to heat the water enough to completely dissolve the sugar.