Why starlings and grackles flock together

BIRD COLUMN FOR December 14, 2003


By Benjamin P. Burtt

We will start this column with a question from a reader about the flocking of starlings and grackles. Then we will cover some of the reasons people hate starlings and then some of the useful, interesting and beneficial things about this bird.


Question : Dear Ben:


I saw a large flock of grackles) heading directly east on August 10. Were they starting their fall migration?


I also saw large flocks of starlings in August. Does that early migration mean that we will have a cold winter? --B.R. by email.


CAPTION: Starlings travel about in flocks and hundreds may show up in our backyard as these did at David Ferros home in Auburn. Is flocking of benefit to birds? With many birds in a flock, it is more likely that danger will be spotted and that food will be found. Both of these are of benefit to the species. ( Photo courtesy of David Ferro.)


Dear B.R.: As for the flocks of grackles moving in a given direction in early August, that was not migration. Grackles never start their migration until late October.


Each species migrates at the same time every year to within a week. The timing is governed by their hormones which in turn are stimulated by the shortening of the daylight hours in the fall. The date they start to migrate is not due to a lack of food, nor to some sense that the winter will be severe. It depends on the sun and that does not change.


It is quite normal for starlings and grackles to gather into flocks after the nesting season is over. Each species gathers into its own flock to forage for food and especially to roost together with their own kind at night.


Usually they choose a certain patch of woods. Sometimes starlings roost on buildings. In the 1960s, thousands made a terrible mess each night in down town Syracuse.


Both species start towards their roost at a time that allows them to reach the spot before dark.
In your case, the grackle roost was located east of your home and perhaps 10 miles away. People who live east of that roost would observe the birds flying west in the late afternoon. Those living south of the roost would see grackles flying north.


The History of the starling in the United States


As for the starling, we have them all through the year. They do migrate in a south westerly direction, but others move in from the north so we do not notice any change.


Among certain birds, this habit of roosting or traveling about in flocks is common. In a flock there are more eyes to watch for danger or to find food.


Starlings are birds that are native to Europe and there were none in this country when the Europeans first came here. Now, there is one starling for every U.S. citizen.


This bird was brought here for what might be called cultural reasons. In March 1890, 60 starlings were released in New York City's Central Park by a group who planned to introduce all the birds mentioned by Shakespeare. More were released the next year, and the birds bred and increased their population.


They appeared in Connecticut and New Jersey in 1904, reached Pennsylvania in 1908 and crossed the Allegheny Mountains in 1916. They were in Ohio in 1924, and eventually reached the West Coast by 1942.


Problems with starlings


Wherever they went, they took over the nesting holes that normally would be used by such birds as flickers, great crested flycatchers and bluebirds. Being very aggressive, starlings drove away the other species. The native birds we prefer were not able to nest successfully.


Most people look on them as a nuisance for when they roost together in large numbers, their droppings contaminate the surroundings.


Two redeeming features of starlings


First, they are great eaters of insects and grubs. Secondly and less known is their ability to sing and imitate the songs of other birds and even human speech.


Generally, when we observe a group of starlings sitting in a tree, all we hear are squeaks, chatters, creaking rattles, chirps and wheezy notes, none of which are pleasant to the ear.
Now and then, we may hear some long and drawn-out cheerful whistles which are almost human-like and easily imitated. Young starlings have harsh, rasping, insistent calls as they request the adults to bring them food.


The birds mimicking ability was studied for 10 years by Dr. Meredith West, and Dr. Andrew King at Indiana University. The starling can imitate cats meowing, roosters crowing, babies crying, water running, horns honking, doors squeaking and even hammers hammering.
They can also imitate human sounds, including words and whistled versions of songs.


According to Dr. West, not only do starlings mimic sounds, but they can also string together various sounds into what she describes as "song soliloquies", that is as if it was singing to itself. Some of these included human speech interwoven among others sounds.


The birds can also re-create strings of connected events. They have, for example, imitated an alarm clock ringing, followed by imitations of clinking dishes and of people talking. Another one mimicked the barking of a dog, followed by the sound of a door opening and closing, followed by a voice saying, "Hello!"


Dr. West believes that starlings give back sounds from their environment, perhaps as a means of testing or probing the reactions of people or other creatures around them.


Sometimes their utterances are comical. She cited one case in which a starling exclaimed, "I have a question," as its claws were being clipped. Another got tangled in a Venetian blind cord and started shrieking, "basic research" over and over.


Yet another would utter a sniffling sound and say "hi." This apparently was the mannerism of the person who took care of the bird and had an allergy which caused them to sniff frequently.
Dr. West said that all of the starlings she and Dr. King have studied show an interest in music or whistling. She said they often produce rambling whistled tunes made up of songs that have previously been whistled or sung to them, "intermingled with whistles of unknown origin and other sounds."


One starling would start whistling "rock a bye baby," then switch to "The William Tell Overture? and go back and forth between the two.


People in the 18th century knew about the singing and mimicking ability of starlings. They trained them as musical birds and kept them as pets.


Mozart’s Pet starling


The Austrian composer Wolfgang Amadeus Mozart had an interesting experience with a pet starling. He kept a diary of the money he spent, and on May 27, 1784, he made an entry that he had purchased a pet starling. He also wrote that the bird whistled 17 notes of a musical score that he had completed about six weeks earlier, even though the work had not yet been played in public.


The 17 notes appear in the final movement of his Piano Concerto in G Major. This startled and worried Mozart, because he had just sent a copy of his work to his father as insurance against someone stealing it and claiming it for their own. In those days, when there where no copyright laws, others would try to steal the works of famous composers.


A day after he sent the concerto to his father, he walked into a pet store and heard a starling whistling notes from his new concertos final movement! So he did what any new creator would do, - he bought the bird.


Drs. West and King suggest that Mozart had visited that pet shop and other pet shops earlier. Being the inveterate whistler that he was, he probably gave the notes away long before the concerto was played publicly.


Early in this century, North American Ornithologists wrote about the mimicking ability of starlings as the bird began to populate this country. The bird so often imitated the notes of the wood pewee that some New England ornithologists thought that it was the natural call of the starling.


But it was later learned that in England the note was not used by the starling. There are no pewees there. As the cowbird became more abundant here, its calls were often imitated by the starling.


Francis H. Allen, writing early in the about 1910, suggested that the starlings learned many of their imitations from other starlings. He observed trends in their singing. For several years, they imitated pewees and then they shifted to cowbirds.


More than 50 species of birds have been listed as imitated by the starling.


Not all starlings are imitators, and some never seem to indulge in the habit. When you next encounter a flock of starlings, stop to listen. I doubt if you will hear the Piano Concerto in G Major, but you may hear some interesting imitations.


Coming December 28: The birds that were visiting feeders in early December and the results of the December Feeder Survey.

To get in touch with Benjamin P. BurttVia Mail: Write to B.Burtt, Stars Magazine, P.O. Box 4915, Syracuse,, NY 13221.


Via E-mail: Send to features@syracuse.com. Be sure to put “For B.Burtt” in the subject line.

Hummingbirds in December? November Feeder Survey results

BIRD COLUMN FOR November 30, 2003

By Benjamin P. Burtt

The December Feeder Survey starts today and continues through Saturday. Of course December doesn't start until tomorrow, but this is the week we will make the observations.
For each species report the largest number you see at any one time during the next seven days. For example, if you see 12 house sparrows this week, but never more than 3 at a time, then 3 is what you put on the list.


At the end of the week, put your list on a postcard or in a letter and send it to B. P.Burtt, care of Stars Magazine, PO Box 4915, Syracuse, NY, 13221. Or send the results by email to: features@syracuse.com and in the subject line write "For B. P. Burtt".


List all the species in the order shown in the summary of the November survey on this page.
For complete written instructions, choose "Library" on the left side of this page near the top and click on "Feeder Survey Directions".


NOVEMBER FEEDER SURVEY


What birds were visiting our yards in early November? Were the numbers up or down? Are birds migrating down from Canada for the winter in their usual numbers? These and other questions are answered by this feeder survey.


This year it looks as if we will be seeing some of the northern finches. While only a few pine siskins and evening grosbeaks were spotted on the feeder survey in the first week of November, many more have been reported in the weeks after the survey. One Canadian person mentioned early this fall that the seed crop on the evergreen trees was poor and that these northern finches would probably be moving south to find food.


What birds were appearing at most feeders? Ninety-eight percent of the feeders had at least one jay and one chickadee. Next on the list was the junco with 92 percent of the people reporting it. 86 percent of the people had mourning doves, downy woodpeckers, crows and cardinals.
Just under 80% spotted goldfinches and white breasted nuthatches. 65% had house finches.
This year there were lots of red-breasted nuthatches on the survey and there are many other sightings too. Before 1993 this bird was seen in small numbers and it bred in some of the higher areas of Central New York.


Starting in the winter of 1993-94, the number reported on the feeder survey tripled over what it had been in most of the earlier years. The next year the numbers dropped to normal. Since that time, the numbers have been high every other year. The numbers in the "high years" have continued to be about three times what they are in lean years.


To my surprise, the white-breasted nuthatch population has been following the same alternate year cycle. I suppose it has something to do with changes in the availability of food or nesting success. Both birds eat insects as well as seeds. They both and must find a natural cavity in which to nest. For the moment, I don't have any thoughts as to why their populations go up and down in alternate years. Both species have their "high" in the same year.


This is another bit of interesting information that has come from your helping me gather data for the feeder survey. If you haven't helped with the feeder survey before, can you make observations for the December Feeder Survey? It is fun and you can make a contribution to science. (You can read the directions by selecting the Library near the top of this page at the left and once there, choose “Feeder Survey Directions”)


The cedar waxwing seldom comes to feeders, but flocks move about feeding on berries where they can find them. In the first week of November, there were very few listed, in fact it was the lowest count in many years.


Among the sparrows, the tree sparrows have begun to appear from the north as they usually do, but the big influx comes in December. White-throated sparrows were about normal, but there are more white-crowned sparrows than usual.


Dark-eyed juncos were numerous as they were last year at this time. The big change for the junco was not in the sheer numbers, but in the fact that nearly every report listed them this November.


A Winter Hummingbird


The most unusual bird for the first week of November was a ruby-throated hummingbird at Janet Allens feeder in Syracuse. Normally, most of these birds leave in the last days of September. This bird showed up in mid-October which is the time the last stragglers leave for the winter.


It spent long hours at the feeder every day through November 5. That night the temperature dropped into the low 20's and the bird was never seen again.


Caption: (Photo courtesy of Janet Allen)


Hummingbirds normally leave for the south in late September. The last ones leave by October 15. This hummingbird broke all the rules and first showed up in mid October at Janet Allens feeder in Syracuse. It spent much time at her feeder every day through November 5. That night the temperature dropped to 22 and the bird was never seen again.

This one was reported on the Feeder Survey for the first week of November. Never before in the 45 years the feeder survey has been conducted, has a hummingbird been reported on a November Feeder Survey.


There was another hummingbird at Ray Burts feeder in South Otselic from October 8 to November 6. This bird had a lot of brown on it and he thought it might be a rufous hummingbird. It is identical to the Allen's hummingbird except for some feathers in the tail.
He sent me some pictures that I shared with Kevin McGowan of the Cornell Laboratory of Ornithology. His opinion was "It certainly looks like a female Rufous/Allen's based on the rufous showing on top of the tail and up the rump. The fact that the tail is longer than the wings rules out Calliope."


This pretty much makes it a Rufous/Allen's. There are usually scattered reports each year of these birds in the Eastern United States.


There was a third hummingbird at Alice Alsever's feeder in Nelson.It was at a feeder very close to the window. She described it as having a lot of rusty color. It was present from November 6 to the 8th.


Unfortunately, I did not hear from any of these people in time to make it possible for anyone else to see these birds.


There is a possibility I suppose that some or all of these hummingbirds were wandering about the south eastern states and were swept in our directions by the winds of hurricane Isabel.
How many species did people see in their yard or flying over? Fifty-six fairly common species were spotted in November compared to 65 in early October. I call these fairly common if they were seen by at least two different people.


In addition to these birds, 23 other species were each reported by 23 different people. This brought the total to 79.


The typical report this time listed 14 species. Half of the people had more than 14 and half had less.


THE TOTAL PICTURE


Here is a list of all species reported. The first figure is the number of birds spotted by 100 observers. The number in parentheses is the number of reports out of 100 that listed the species. If you divide the number of birds by the number of reports, you get the average number per observer. You may wish to compare this with your own tally for that species.
Great blue heron 5(5); turkey vulture 20 (7); blue goose 8 (1); snow goose 26 (1); Canada goose 9,679 (52).


Ducks: wood 3 (1); black 6 (1); mallard 216 (10); bufflehead 26 (3); hooded merganser 1 (1); common merganser 5 (1).


Hawks: harrier 4 (4); sharp-shined 5 (4); Cooper's 7 (7); red-tailed 25 (20); kestrel 2 (2); pheasant 5 (3); ruffed grouse 10(5); turkey 58 (8); killdeer 2 (1).


Gulls: ring-billed 117 (16); herring gull 30 (4); black-backed gull 5 (1); rock dove 265 (31); mourning dove 495 (86); ruby-throated hummingbird 1 (1).
Woodpeckers: red-bellied 39 (33); sapsucker 1 (1); downy 144 (86); hairy 65 (44); flicker 11 (8); pileated 2 (2).


Phoebe 1 (1); horned lark 2 (1); blue jay 322 (98); crow 595 (86); raven 6 (2); chickadee 415 (98); titmouse 96 (48); red-breasted nuthatch 56 (39); white-breasted nuthatch 127 (77); creeper 2 (2); Carolina wren 4 (3); house wren 1 (1); winter wren 1 (1).


Golden-crowned kinglet 3 (2); ruby-crowned kinglet 1 (1); bluebird 15 (7); robin 259 (30); mockingbird 2 (1); cedar waxwing 34 (5); starling 2,217 (36); towhee 1 (1).


Sparrows: tree 18 (10); chipping 21 (10); field 2 (2); savannah 2 (1); fox 4 (2); song 34 (18); white-throated 66 (29); white-crowned 40 (16); junco 498 (92).


Cardinal 170 (86); red winged blackbird 254 (9); grackle 229 (16); cowbird 40 (4); purple finch 39 (16); house finch 342 (65); siskin 2 (2); goldfinch 556 (79); evening grosbeak 11 (3); house sparrow 551 (49).

To get in touch with Benjamin P. BurttVia Mail: Write to B.Burtt, Stars Magazine, P.O. Box 4915, Syracuse,, NY 13221.


Via E-mail: Send to features@syracuse.com. Be sure to put “For B.Burtt” in the subject line.