Mean ± SE call rate of (a) blue tits and (b) great tits in

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Proportion of bird species responding to Pygmy Owl calls as a function

of the principal component analysis used to describe avian mobbing

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How to tell a blue tit from great tits, coal tits and the rest of Britain's tit population - Country Life

Nora CARLSON, PostDoc Position, PhD, University of Victoria, Victoria, UVIC, Department of Biology

Blue Tit - where they live, food, nesting and other facts - Garden Birds

Blue Tit or Great Tit: What Are The Differences?

The Blue Tit - its call, song and alarm call

Great Tit BTO - British Trust for Ornithology