Animal Architects by James L. Gould

Author:James L. Gould
Language: eng
Format: epub
Publisher: Basic Books
Published: 2012-02-02T16:00:00+00:00

RENOVATIONS

One drastic but effective solution to the insulation problem is widespread in the ancient waterfowl group: One or both parents pluck down from the breast and use it to line the nest. Wood ducks and hooded mergansers, for instance, occupy natural cavities (preferably with wood chips or shavings already in place) and add a thick layer of down. Not only does this insulate the clutch from contact with the bottom of the cavity, the behavior uninsulates the breast and exposes a “brood patch” of highly vascularized skin that effectively transfers heat to the eggs.

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