. Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage. Zoogeography -- Geographical distribution; Animal ecology. 380 LAND ANIMALS Keeping various species of birds in a more moisture- saturated air led to a darkening of the plumage. The thrush, Hylocichla mustelina, or the Inca pigeon, Scardafella inca, afford Such animals approach varieties that are found in regions with a moist climate. The weaver finch, Munia flaviprymna, from the Australian desert, after a captivity of three years in the damp climate of En
. Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage. Zoogeography -- Geographical distribution; Animal ecology. 380 LAND ANIMALS Keeping various species of birds in a more moisture- saturated air led to a darkening of the plumage. The thrush, Hylocichla mustelina, or the Inca pigeon, Scardafella inca, afford Such animals approach varieties that are found in regions with a moist climate. The weaver finch, Munia flaviprymna, from the Australian desert, after a captivity of three years in the damp climate of Eng- land, assumed a coloration of its plumage that shows agreement with the related but not desert-dwelling species, M. castaneithorax, in color pattern as well as in the deeper tinge (Fig. 109).10 Observation corroborates these experiments. Mountain and northern butterflies display much darker scales; however, this may be due more. Fig. 109.—a, Australian weaver-finch, Munia flaviprymna, a desert inhabitant; b, the same after three years' residence in a humid climate; c, Munia castanei- thorax, not a desert form. After Seth-Smith. to temperature than to humidity. The darkening of the red slug (Avion empiricorum) is said to parallel the humidity; in the same manner certain snails, Helix arbustorum and Succinea pfeifferi, are darker than usual in damp On the other hand, an abundance of moisture seems to promote the existence of albinistic snails. The common frog (Rana temporaria) and the mountain lizards (Lacerta vivipara) are also said to be darker in a more humid environment. The song sparrow is paler in the arid parts of the United States, and more melanistic in the wet Puget Sound country, than it is in the mesic regions of the eastern states. This reaction is widespread among the mammals, without being, however, a universal phenomenon. Thus the water-inhabiting varieties of the field mouse, Microtus terrestris, the so-called water rat, are generally darker colo
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectanimalecology
