Ducki Unlimited Birding Tours

Mark Korducki

Welcome to Ducki Unlimited Birding Tours LLC.

I founded Ducki Unlimited Birding Tours to share my love of birds with others. I have been birding for most of my life and have been leading tours around the United States for the past 25 years. Please join me on small guided tours around the United States or contact me for local guiding in Wisconsin, especially in the Milwaukee area or up in beautiful Door County. Custom tours can be arranged.

Ready to take the next step?

Join me on a tour at some of the best birding hotspots in the United States. Group sizes will be 9 or less to optimize viewing of target species.

Hear from our dedicated customers.

  • "Mark is an incredibly skilled birder and a patient guide. He has a knack of getting on difficult birds and works hard to make sure everyone gets good looks."

    Deb F

  • "You can't go wrong with a tour led by Mark. He's focused, patient and fun to travel with."

    Jane A

  • "I've always been impressed by Mark's ability to identify species quickly and with ease."

    Jacob K