The experiment of Malte Andersson

The experiment of Malte Andersson

1. Published in Nature 1982, Malte Andersson

2. Female long tailed widow birds choose mates based on the lengths of their tails.

   • the long tailed skuas is relative of dunks and gulls
   • turns rodent predator in the far North during the breeding season.

3. Divide male birds into four groups

   • manipulate the tails of the males

4. Experimental variable

   • length of tail

5. Controlled variable

   • location, season, time, weather

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