Gentle pecking of feathers where the recipient is calm and not reacting is a normal social behaviour of birds and should never worry anyone. But in situations where the pecking is more violent, and ...
The objective of this study was to describe the ontogeny of the severe feather pecking (SFP), gentle feather pecking (GFP), aggressive pecking (AP), and enrichment pecking (EP) of non-beak-trimmed ...
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