Uploaded May 2023 | Updated September 2026, 1 day ago

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Because mineral-based 'pecking stones' can act as foraging enrichments for laying hens, we investigated wether birds prefer harder or softer ones, and how much previous experience with pecking stones influences their use, along the way finding evidence that hens' use of stones relates to specific appetites for calcium.

Presentation by Madeleine McAuley at the 2023 Annual Research Symposium.