They're Outsmarting Us': Birds Build Nests from Anti-Bird Spikes - The New York Times

Help Protect Nesting Birds in Your Field or Yard - New York Almanack

Birds Repurposing 'Anti-Bird' Spikes to Build Nests, Researchers

Apparently Magpies and Crows Are Using Anti-Bird Spikes to Make

Some birds are using antibird spikes to build their nests

This bird nest becomes a 'fortress' using antibird spikes

We Helped Scientists Track Birds This Summer. - The New York Times

Mocking Jay

We Helped Scientists Track Birds This Summer. - The New York Times

European Birds Have Been Using Anti-Bird Spikes To Make Nests