The youngest members of zebra finch broods "explore more" than
older siblings in adult life, say scientists. Researchers
investigated how the birds' behaviour was affected by the way
their parents cared for them as hatchlings. The team studied
broods where females lay and incubated a clutch of eggs over a
period of days, resulting in a size hierarchy within the clutch.
They found the youngest birds were more likely to explore their
environment as adults in search of food. keyboard shortcuts: V
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