Wood Thrush Notes

Hummingbird feeder action increasing

This past week we saw a definite increase in hummingbird visits to our feeders in Cheatam Co. Like other songbirds Ruby-throated hummingbirds are nearly through raising young for this year. It’s no coincidence that more hummingbirds will begin visiting feeders more often for the next 2 months. August and September are THE busiest hummingbird feeding months here in Middle TN. With nesting responsibilities concluded hummers will begin taking advantage of feeders in an effort to pack on as much fat as possible in preparation for their migration back to Central and South America. 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. 

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Male Ruby-throated Hummingbird

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Female Ruby-throated Hummingbird

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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 made of a 1 part sugar to 4 parts water ratio. 

And if you get a chance visit Warner Parks while they are banding in August and September and see those little fat pockets for yourself.

Early Summer Hummingbirds

A day doesn’t go by at The Wood Thrush Shop that we are not asked “what’s wrong with the hummingbirds?” “I don’t see any coming to my feeders.” “Are they here”? 

All of our summer resident Ruby-throated hummingbirds are here and well into their first or even second nesting of the season by now.  Like Bluebirds they all don’t start nesting at the same time.  There could be as much as a month difference in the first nesting phase of the earlier arrivals in March and April and the later arrivals in late April to mid-May.

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The nesting phase is the reason people generally see far less of hummingbirds now as opposed to mid-July through September when they are seen so readily at feeders.  One must remember hummingbirds do not come all the way from Central and South America for sugar water.  It’s of little need to them during the first half of their summer residency. They are very satisfied with nectar from flowering plants, and insects for protein. Hummingbird feeders are not in high demand at this time and will serve only for quick visits and a brief drink.  When nesting is near conclusion in mid to late July and early August that is when hummers begin visiting feeders with frequency and intensity to fatten up in preparation for the long migration back to Central and South America. 

With that in mind keep fresh nectar in the feeder but do not fill to capacity.  Small amounts are recommended now to decrease waste and major cleaning of feeders.   In warmer weather with temperatures near 90, nectar is only good for 2-3 days at a time.  If your feeder is getting full sun you may want to adjust to a shadier situation or be prepared to change the nectar even more frequently.

Remember to only use plain white table sugar to make nectar, no brown or raw natural sugar, no honey, and no color.  A 1 part sugar to 4 parts water ratio is the perfect solution.  Making it sweeter is no more appealing or beneficial to the birds. 

Be patient, hummingbirds will begin visiting feeders when they are ready.  We should see an uptick in activity around mid-July.

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We will be closed Monday, June 19th.

We will see you on June 20th!