Question

Can we use habitat food composition as surrogate for Bird’s food composition for a particular habitat when we know habitat preferences?​

Answer 1

Answer:

I think your idea is interesting. However, I feel uncertain about its implicit assumption, namely, 'birds proportionally feed on the available prey/food items in any given habitat'. To me it would seem more likely if birds preferred those food items that offer the best reward in terms of energy/nutrients versus energy expenditure to obtain them. In addition, competition may cause dietary niche shifts by changing availability or costs. Moreover, I would not be surprised if some variation existed even between individuals of the same species.

In the end, I believe it is a reasonable idea but you would need to first evaluate/test it for your specific case before you can apply it to estimate/determine ecological risks.

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