When I found these nests I was AMAZED at what these birds can do. Though when I tried standing up on my kayak to look inside a tree swallow nesting box, It was empty! But when I paddled under a small bridge, I found Five pink tree swallow eggs, at first I thought they were mourning dove eggs but after more research I’m pretty sure there are tree swallow. Later when I traveled back, in the reeds there was a red winged blackbird nest. Three white eggs were in this one, I can’t wait to see how these eggs grow up.