Pre-laying time budgets in rock pipits: priority rules of males and females

Article Abstract:

Differences in behavioral patterns among male and female rock pipits were studied to investigate the idea that males and females use different foraging techniques. The results showed that females foraged more frequently than males, while males engaged more in territory surveillance. Suchbehavioral patterns implied that females stressed feeding more than males and that males prioritized vigilance and alertness of probable mates particularly during the morning and early in the pre-laying season.

Animal feeding and feeds

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Pseudo concorde fallacy in the willow tit?

Article Abstract:

The nest defense ability of willow tits, Parus montanus, helps in testing the optimal parental investment theory. The parental defense intensity increases with offspring age. Early and middle-season broods were protected more quickly than late-season broods. The protection intensity does not depend on the quality or quantity of the offspring. The parents detect the breeding success early in the season independent of the brood and clutch size.

Eggs, Bird eggs, Bird nests, Eggs (Biology), Incubation

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Food supply for settling male rock pipits affects territory size

Article Abstract:

The impact of food abundance on the size of the breeding territory of rock pipits (Anthus petrosus) was examined. The food intake rate of males was manipulated by providing a hidden source of food during the initial period of territory establishment. It was found that fed males had bigger territories and were likely to defend longer stretches of shoreline than male pipits that were not given additional food.

Health aspects, Food and nutrition, Territoriality (Zoology), Animal territoriality, Food supply

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