Data from: Expression of multiple sexual signals by fathers and sons in the East-Mediterranean barn swallow: Are advertising strategies heritable?

Yoni Vortman, Rebecca J. Safran, Tali Reiner Brodetzki, Roi Dor & Arnon Lotem
The level of expression of sexually selected traits is generally determined by genes, environment and their interaction. In species that use multiple sexual signals which may be costly to produce, investing in the expression of one sexual signal may limit the expression of the other, favoring the evolution of a strategy for resource allocation among signals. As a result, even when the expression of sexual signals is condition dependent, the relative level of expression of...
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