Little Blue

Anyone who has payed much attention to the herons and egrets probably won't be at all surprised to learn that the Great Egret and Great Blue Heron are cousins in the Genus Ardea. Likewise, the Snowy Egret and Little Blue Heron. are cousins in the Genus Egretta. There is an obvious difference in the color of their plumage, but the over all size and body confirmation of the Snowy Egret and Little Blue Heron are similar.

One difference between the two species that may not be as obvious as their color is the way they go about hunting their prey. The Snowy Egret is a very active and aggressive hunter, constantly moving, often with the appearance of being very agitated. The Little Blue, as they are frequently referred to by birders, is much more laid-back, walking slowly and calmly along in shallow water as it hunts.

This set of photos was taken on the Mission Reach of the San Antonio River downstream from the Roosevelt Park trailhead on Friday, September 13, 2013. This Little Blue is walking on the edge of the gravel point bar on the inside of the curve in the river upstream from the pedestrian bridge.

A Perfect Plant for a Rainy, Wet Day

The very distinctive Buttonbush is an obligate wetland plant, generally growing along the banks of ponds, lakes and streams and in other areas that tend to remain damp. They typically grow to be small to medium shrubs, but under ideal conditions can become small trees. Buttonbush is sometimes grown in ornamental landscapes, but their roots must be in damp soil, so they require a large amount of water.

Beyond its unique beauty, Buttonbush is a very beneficial plant. Once established, they have very strong root systems (stability rating 8). This is an excellent riparian plant to prevent erosion while withstanding significant floods.

There are at least two species of Sphinx Moths that depend on Buttonbush as a larval host. Birds, butterflies and other insects are attracted to the nectar of the flowers. Ducks and various shorebirds eat the Buttonbush seeds.

This set of photographs was taken on the Eagleland Reach of the San Antonio River on Friday, August 30, 2013.

Up Close With A Snowy Egret

In a prose poem I wrote about nine years ago, I included the line, "…after all, if I could say with words what I show in a photograph, I would be more of a writer and less of a photographer…" 

I can't say much about these photos of a Snowy Egret that adds anything other than these egrets rarely let me get this close when I am photographing them. Their intense focus and concentration when hunting for something to eat is remarkable:

This set of photos was taken on the Mission Reach of the San Antonio River at the weir just upstream from the first pedestrian bridge south of the Roosevelt Park trailhead on Friday, September 13, 2013.

A Sure Sign of Autumn's Approach

The recent rain has been a very welcome change in the weather. The first major cool front of the season is forecast to arrive just in time for the first day of Autumn on Sunday. One of the best indicators that Fall is fast approaching are the beautiful yellow flowers beginning to open on the Lindheimer's Senna:

This set of photos was taken along the Panther Spring Creek trail at Walker Ranch Historic Landmark Natural Area on Wednesday, September 11, 2013.

Eryngo

Eryngo sounds like it should be the name of a cartoon character or maybe an action hero. It is in fact the name of a unique, fascinating plant.

At first glance, Eryngo looks as if it should be classified with the thistles in the Asteraceae (also known as Compositae) Family, but it is really a member of the Apiaceae (also known as Umbelliferae) (Parsley and Carrot) Family.

Eryngo's multi-lobed purple leaves vaguely resemble the leaves of Agarita. The leaves are stiff with very sharp spines at the tip and lining the edges. As with Agarita, a thick pair of gloves are highly recommended when handling the plant.

The cylindrical flower heads are tight clusters of small purple flowers. Most of the plant is purple. The blue "fibers" protruding from the flowers are the flowers' anthers:

This set of photos was taken on the Mission Reach of the San Antonio River on the east bank not very far south of the S.E. Military Dr bridge on Friday, August 23, 2013.

Indiangrass

Indiangrass (Sorghastrum nutans (L.) Nash) is one of the four primary Tallgrass Prairie grasses. The other three are Big Bluestem, Little Bluestem and Switchgrass. Its distinctive yellow, some may say golden, inflorescence begins to bloom in August and continues well into autumn:

This set of photographs was taken at the savanna restoration site in Phil Hardberger Park on Wednesday, September 4, 2013.

Changes in Direction and Pace; A Long Awaited Announcement

Sunday, September 15, 2013

"River" is a common metaphor for life. Streams of all kinds, from ephemeral streams that only flow immediately after a rain to the mightiest of perennial rivers like the Missouri, Ohio and Mississippi Rivers, are living, dynamic systems. They are constantly changing. The changes are typically occurring at too slow a pace to be perceived. But occasionally, the changes are quick and dramatic. Such is life.

During the past few months, I have continued my walks and have continued to record my experience through photography. Unfortunately, I have found the time to sit at the computer and prepare the material for publication here on While on a Walk to be rather scarce. New possibilities and directions have opened for me to pursue.

For the past several weeks, I have been asked at least once almost everyday how my books are coming along and when they will be ready for publication. These questions are coming from a wide range of people. Obviously, the time is right.

I am pleased to announce that for the foreseeable future, the primary focus of my time and energy will be on completing the manuscripts and bringing the books to publication. Yes, they are long overdue.

Going forward, my goal for While on a Walk is to publish at least one or a small set of photos everyday from the material I have accumulated and that continues to grow. The posts will likely not follow a chronological order. I will probably have to experiment with some minor changes in formatting to make this work.

To give visual expression to the river metaphor, the following two photos were taken on Monday, August 19, 2013 from the pedestrian bridge looking downstream along the San Antonio River toward the first Mission Rd bridge. This section of the channel is one of the major hydrological stress points in the Mission Reach Restoration Project and was severely impacted and altered by the May 25th flood.

The first photo is a full overview of the channel. The second photo* is a closer view of the riffle in the foreground of the first photo. If one looks closely, there is a Snowy Egret toward the left side of the lower end of the riffle and a Great Egret on the right side:

To show how the  channel has changed in the past two years, here is a photo taken with a somewhat shorter focal length lens from the same location on Friday, September 30, 2011:

* Not seen to the right in the first two photos is a backhoe that was busy repairing the riffle. I was fascinated that the two egrets and a cormorant that is also outside the frame were not the least frightened by all the banging, clanking, movement and engine noise of this large piece of machinery. In fact the birds were taking full advantage of all the food stirred up by its rearranging the rocks and boulders.