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15 Community ecology homework shortest answer if possible

Environmental Science
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 For robins small worms contain 25 calories of energy, cost 10 calories and take 2 minutes to harvest.  For the same birds medium worms contain 50 calories and cost 15 calories and take 3 minutes to harvest.  Large worms contain 75 calories, cost 30 calories and take 5 minutes to harvest.  Based on optimal foraging theory, what sized worms should robins favor?  Explain your logic!

Apr 14th, 2015

The Robins should favor the medium sized worms. Over all, the small worms would give the robins 450 calories per hour, the large would take in 540 calories per hour and the medium would give the Robins 700 calories per hour. I just took each amount of calories for each worm and then subtracted how many calories burned. I then calculated how many worms they could harvest in an hour. Then I multiplied that number by the amount of calories each worm would give the Robin. The medium worms are the best. 

Apr 22nd, 2015

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