Cover -- Title -- Copyright -- Contents -- Figures, Boxes, and Table -- Acknowledgments -- 1 Introduction -- Definitions -- Some History -- Categories of Signal Costs -- Alternative Explanations for Reliability -- Deception Redux -- Evolutionary Interests of Signalers and Receivers -- 2 Signaling When Interests Overlap -- Signaling Between Relatives: Theory -- Begging -- Alarms -- Food Calls -- Individually Directed Skepticism -- Conclusions -- 3 Signaling When Interests Diverge -- Mating Signals: Theory -- Carotenoid Pigmentation -- Songs in Oscine Birds -- Tail Length in Birds -- Conclusions -- 4 Signaling When Interests Oppose -- Signaling in Aggressive Contexts: Theory -- Postural Displays of Aggression in Birds -- Badges of Status -- Weapon Displays in Crustaceans -- Dominant Frequency in Calls of Frogs and Toads -- Conclusions -- 5 Honesty and Deception in Communication Networks -- Third-Party Receivers -- "Eavesdropping" versus "Interception" -- Eavesdropping in Signaling Interactions -- Third-Party Receivers and Reliability -- Conclusions -- 6 Conclusions -- Reliability -- Alternatives to the Handicap Mechanism -- Deceit -- The Balance of Reliability and Deceit -- References -- Author Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- V -- W -- Y -- Z -- Subject Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- R -- S -- T -- U -- V -- W -- X -- Y -- Z.