Rubies Heading South

To avoid the cold, and the scarcity of food when flowers stop blooming and insects stop flying, Ruby-throated Hummingbirds go south. Some adult males start migrating south as early as mid-July, but the peak of southward migration for this species is late August and early September. By mid-September, essentially all of the Ruby-throated at feeders are migrating through from farther north, and not the same individuals seen in the summer. This is difficult to see, since they all look alike, but has been proven by banding studies. The number of birds migrating south may be twice that of the northward trip, since it includes all immature birds that hatched during the summer, as well as surviving adults.

For a hummer that just hatched, there's no memory of past migrations, only an urge to put on a lot of weight (see above) and fly in a particular direction for a certain amount of time, then look for a good place to spend the winter. Once it learns such a route, a bird may retrace it every year as long as it lives. The initial urge is triggered by the shortening length of sunlight as autumn approaches, and has nothing to do with temperature or the availability of food; in fact, hummingbirds migrate south at the time of greatest food abundance. When the bird is fat enough, it migrates. It's not necessary to take down feeders to force hummingbirds to leave, and in the fall all the birds at your feeder are already migrating anyway. If you remove your feeder, birds will just feed elsewhere, but may not bother to return to your yard the next year. I recommend continuing to maintain feeders until freezing becomes a problem.

Many people notice that adult males migrate earlier than females, because in the last month or so there may be no birds with red throats at feeders. However, remember that immature Ruby-throats of both sexes look much like their mothers. Young males often have a "5 o'clock shadow" of dark throat feathers in broken streaks, and many develop one or more red gorget feathers by the time they migrate. Immature females may have much lighter streaks in their throats, but no red.

There is evidence that fewer Ruby-throats cross the Gulf in fall than in spring, most instead following the Texas coast back into Mexico. Perhaps the hurricane season is a factor, and the genes of many birds with a tendency to fly over water were lost at sea during storms.

There are many more questions than answers about hummingbird migration. Until technology provides radio transmitters small enough for a 3-gram hummingbird to carry safely, banding is the best tool to collect data on individual birds. But since only a few dozen people in North America - almost all of them amateurs like me - are licensed to handle hummingbirds, progress is slow and the odds of recapturing a banded bird are very low.

Thoughts for the Road - #23

Every morning in Africa, a Gazelle wakes up. It knows it must run faster than the fastest lion or it will be killed. Every morning a Lion wakes up. It knows it must outrun the slowest Gazelle or it will starve to death. It doesn't matter whether you are a Lion or a Gazelle... when the sun comes up, you'd better be running.

90 Years of Women's Suffrage

The 19th amendment guarantees all American women the right to vote. Achieving this milestone required a lengthy and difficult struggle; victory took decades of agitation and protest. Beginning in the mid-19th century, several generations of woman suffrage supporters lectured, wrote, marched, lobbied, and practiced civil disobedience to achieve what many Americans considered a radical change of the Constitution. Few early supporters lived to see final victory in 1920.

Beginning in the 1800s, women organized, petitioned, and picketed to win the right to vote, but it took them decades to accomplish their purpose. Between 1878, when the amendment was first introduced in Congress, and August 18, 1920, when it was ratified, champions of voting rights for women worked tirelessly, but strategies for achieving their goal varied. Some pursued a strategy of passing suffrage acts in each state—nine western states adopted woman suffrage legislation by 1912. Others challenged male-only voting laws in the courts. Militant suffragists used tactics such as parades, silent vigils, and hunger strikes. Often supporters met fierce resistance. Opponents heckled, jailed, and sometimes physically abused them.

By 1916, almost all of the major suffrage organizations were united behind the goal of a constitutional amendment. When New York adopted woman suffrage in 1917 and President Wilson changed his position to support an amendment in 1918, the political balance began to shift.

On May 21, 1919, the House of Representatives passed the amendment, and 2 weeks later, the Senate followed. When Tennessee became the 36th state to ratify the amendment on August 18, 1920, the amendment passed its final hurdle of obtaining the agreement of three-fourths of the states. Secretary of State Bainbridge Colby certified the ratification on August 26, 1920, changing the face of the American electorate forever.

Thoughts for the Road - #39

"The will to win means nothing without the will to prepare."
-Juma Ikangaa, 1989 NYC Marathon winner

Full Sturgeon Moon

Full moon names date back to Native Americans, of what is now the northern and eastern United States. The tribes kept track of the seasons by giving distinctive names to each recurring full moon. Their names were applied to the entire month in which each occurred. There was some variation in the moon names, but in general, the same ones were current throughout the Algonquin tribes from New England to Lake Superior.

European settlers followed that custom and created some of their own names. Since the lunar month is only 29 days long on the average, the full Moon dates shift from year to year.

The fishing tribes are given credit for the naming of this month’s moon, since sturgeon, a large fish of the Great Lakes and other major bodies of water, were most readily caught during this month.

A few tribes knew it as the Full Red Moon because, as the moon rises, it appears reddish through any sultry haze. It was also called the Green Corn Moon
or Grain Moon.