Tropical songbirds tend to lay fewer eggs in each clutch than birds nesting at higher latitudes. David Lack of Oxford University first placed this observation in a life history context. To what relation did Lack attribute this pattern?

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The Answer of Tropical songbirds tend to lay fewer eggs in each clutch than birds nesting at higher latitudes. David Lack of Oxford University first placed this observation in a life history context. To what relation did Lack attribute this pattern?

Tropical Songbirds Tend to Lay Fewer Eggs in Each Clutch