In Biebrza, I found Aquatic Warbler at the renowned Dluga Luka boardwalk without any difficulty. My first visit in the late afternoon was successful - so no real need for my subsequent dusk and dawn returns.
A trip report is now available on my website, with full details of sites visited and illustrated with some of the photos I took.
Here is a brief taster! To see a gallery of my better trip images, click here.
Red-backed Shrike in Bialowieza
White-winged Black Tern in Biebrza
Aquatic Warbler in Biebrza
Citrine Wagtail in Biebrza