Tytuł pozycji:
Energy requirement in Red-backed Shrike
Daily food consumption of the Red-backed Shrike averaged 56% of the mean body weight for nestlings and 50% for fledglings Gross energy intake was 15.9 kcall/ nestling/ day, and 22.8 kcal/ fledgling/ day. Average daily metabolic rate was 8.4 kcal/nestling/day and 14.9 kcal/ fledgling/day. Food consumption and metabolic rate were largely affected by the ambient temperature. Amount of food consumed by young birds until a month of age in the Red-backed Shrike population was 3.5 mg fresh weight of insects per day per m2.
Bibliographical references (page 247)
Streszczenie w języku polskim
Strony 235-248 : ilustracje ; 24 cm
Pages 235-248 : illustrations ; 24 cm
Abstract in Polish
Bibliografia na stronie 247