There are instances where bird nests made of earth have been reused for almost half a century. Neolithic farmers learnt the value of mineral rich mud and river sediment, and it is still used today ...

asks Birds & Blooms reader Leona Schroeder of Fergus Falls, Minnesota. Birding experts Kenn and Kimberly Kaufman say, “Mud is an essential part of robin nest architecture. The foundation is ...

The newest residents, thousands of barn swallows and cliff swallows, are making themselves unwelcome by building mud nests under the eaves. "I don't want them flying around and leaving bird feces ...