Adaptation and constraint in the growth pattern of lapwing Vanellus vanellus chicks

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Abstract
The growth and development of lapwing chicks were studied on farmland in Central Scotland. Selective pressures and constraints imposed by initial priority, limited resources and limitations of the food processing efficiency of the chicks explain the general growth pattern. Those structures with a high early priority, e.g. locomotory and feeding apparatus, were comparatively mature at hatching and developed early. By contrast, wing development was delayed until the chicks had reached a suitable feeding area and were feeding efficiently. Habitat, season and size and weight at hatching were additional intrinsic and environmental factors affecting growth.