Assertion: gull | /r/HasProperty | intimidated by birds of prey
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Source sentences:
text: Although they are intimidated by birds of prey, European herring gulls, in addition to being social birds with strength in numbers, are large, powerful, and aggressive as individuals and are more than capable of fighting back against the potential predator, particularly if they consider their chicks to be at risk; in fact, the gulls may actually pose a greater threat to a raptor than vice versa.