Assertion: crick's study | /r/HasProperty | based on data
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Source sentences:
text: A more recent study of Fulmars Fulmarus glacialis , based on data gathered at a colony in Orkney (off the north coast of Scotland) between 1950 and 2000, showed that hatching and fledging success were related to the NAO, due potentially to the climate effects on the abundance of their crustacean and fish food supplies or due to the impact of severe winter weather on parental body condition (Thompson & Ollason 2001).