Does blood loss explain higher resting metabolic rates in nestling birds with hematophagous ectoparasites?

Natalie Sun, Sarah Goodwin, Michael Griego, Alexander Gerson & Ethan Clotfelter
Nestlings of many bird species are hosts to hematophagous ectoparasites. Parasitism of nestlings is usually sub-lethal, but its effects can extend into the fledgling and adult stages. Nestling hosts lose enough blood to become anemic, but the effects of reduced oxygen-carrying capacity on metabolic rate are poorly understood. This study examined the consequences of parasitism by larval blow flies Protocalliphora sialia for nestling tree swallows Tachycineta bicolor. We found that nestlings with more parasites had...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?