Figure 2From: Do warning calls boost survival of signal recipients? Evidence from a field experiment in a group-living bird speciesInfluence of warning calls given by Siberian jay breeders during simulated goshawk attacks in autumn on subsequent winter survival of non-breeders (N = 28 individuals). Non-breeders living with breeders which warn (N = 21 individuals) had a higher over-winter survival than non-breeders which were not warned (N = 7 individuals).Back to article page