Sentences with phrase «by avian predators»

Not exact matches

They investigated life history data of nearly 1400 bird species and found that avian life span varies considerably across the entire Earth, and that much of this variation can be explained by the species» body mass and clutch size and by the local diversity of predator species.
«As with all good studies, this one generates many new questions,» says Staffan Bensch, an animal ecologist at Lund University in Sweden, who wonders whether the virus has benefitted some songbird species by killing off their avian predators, jays and crows.
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