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Akustické varovné signály syslů. I. Úvod, význam, vnitrodruhová a mezidruhová variabilita

Alarm calls of ground squirrels. I. Introduction, meaning, intra- and inter-species variation

Ground-dwelling sciurids, including prairie dogs (Cynomys), marmots (Marmota) and several genera of ground squirrels (e.g. Ammospermophilus, Spermophilus, Notocitellus, Ictidomys, Urocitellus), emit alarm calls in the presence of predators to warn their kin. These calls show high intra- and inter-species variation. The alarm calls of many species have potential to encode information about caller i…