Thank you Mark, I appreciate you viewing and commenting on my images. Your post was most imformative, I did not know that it was what they feed on and how they feed was the reason for the flight characteristics. In the first image the bird was gliding from the top of a tree to another area of the marsh. In the second image the heron crossed the path I was on just slightly above the brush tops, I shot a couple frames and it was gone further into the marsh.
Aparently this is a rare event. Unless it is landing, taking off, on a short flight, or stressed, flying with the neck extended is very uncommon. Take a look at: http://10000birds.com/little-blue-herons-in-flight.htm
I guess this means that you have a most unique photograph!
Thanks Frank, I went to the website in the link...very interesting. Once again thanks for commenting and posting the link.