A few days ago most of the marsh residents were working the far edges and avoiding the main dike road. This is when I use my monopod. I want to shoot long, wide, and at a slower speed.
A group of White Pelicans moved back and forth along a side dike. This path took them past other birds also working the reeds there.
The first photograph had two mixing with a Great Blue Heron. While the Heron is tall the difference is obvious. The Pelicans are much bigger.

Below Pelicans swam by a young Wood Stork. The stork was a juvenile, still when an adult is the tallest bird out here. Again the size difference is clear.
White Pelicans are huge birds. If they were able to stand straight they are just about the size of a person.
Some interesting comparisons.

ACE Basin.