The same time every day. Around 4:30 PM the males who have a mate return from the marsh. They bring nesting sticks, an offering for being gone so long I think.
She stands to greet him, sometimes calling out a hoarse greeting.
At this time of year the sun is just dropping below the tree line. Light gets better soon, but one side of the swamp with many nests is too dark to shot.
The female may now leave the nest to hunt, or send the male back out for more materials. For the next hour the male may retrieve materials from all around the area.
Photographers look out ! When a male is in the frantic search he may not see us and at times you end up sharing the same space. And remember… almost as tall as a person and have a very long sharp bill. They get the right of way LOL.