Ueber eine kleine ornithologische Sammlung von den Philippinen

Ohne Zusammenfassung     

Ueber einige Tauben von Borneo und den Philippinen

Ohne Zusammenfassung     

Beitrag zur Kenntnis des Vorkommens ostpal?arktischer Limikolen auf Mindoro, Philippinen

Summary From September 1970 till March 1972 field observations on birds were carried out on the Philippine Island Mindoro Occ., in the vicinity of the town San José. This paper deals with plovers, snipes and waders which were either on the passage, or wintering in that area. A few individuals of ten species probably remain also during sommer season in the Philippines. The evaporation lakes of the Philippine Salt Industry (PSI), the ricefields and fishponds of the adjacent National Investment and Development Corporation (NIDC), including the coast of the South China Sea and two large rivers are an important habitat for these birds. Therefore, 14 additions have been made to the avifaunal list of Mindoro Island.     

Guano-Gewinnung auf den Chincha-Inseln

Ohne Zusammenfassung(Aus Cuzco and Lima von Clements Markham. London, 1856).     

Ausflug auf den Hochschwung

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Eine Excursion auf den Hochschwab

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Zur Verbreitungs-Ökologie des Bostrychietum

Ohne Zusammenfassung     

Ornithophilie auf den Canarischen Inseln

(1) On the Canary Islands and Madeira typical bird-flowers occur in at least twelve species of six genera, although true flower-birds are absent. This inconsistency is in part elucidated by field observations on exotic and wild plants of Tenerife. —(2) In the Botanical Garden of Orotava it could be observed that various ornithophilous plants, which were introduced there, were visited by indigenous birds for nectar and in one case (Orthostemon) for food tissue. Of the three bird species involved, an endemic race of Chiffchaff (Phylloscopus collybita) and resident Blackcaps (Sylvia atricapilla) exploit, and pollinate, flowers legitimously, while the Wild Canary (Serinus canaria) is predominantly a destructive nectar robber. —(3) The insular Chiffchaff also proved to be a regular pollinator in the wild, at least ofCanarina canariensis andIsoplexis canariensis, two ornithophilous paleoendemics. Ornithophily, thus, is naturally practised on the island, though by birds basically insectivorous. —(4) A list of Macaronesian plants bearing the more or less complete ornithophilous syndrome is presented, including newly recognizedTeucrium heterophyllum andScrophularia calliantha. —(5) On biogeographical and faunistic grounds it is presumed that the modern visitors of Canarian bird flowers are secondary rather than the original partners of the continental tertiary flora in which these plants originated. Palearctic immigrants, when becoming resident on the islands during and since the Pleistocene, adopted facultative nectar feeding, entering an orphaned food niche. Casual flower visits in Europe suggest a certain predisposition of the Chiffchaff and the Blackcap for the exploitation of flowers. — (6) The ability of unspecialized birds to acquire nectardrinking spontaneously and to pass this habit on to their offspring, is demonstrated by a population of Tree Sparrows (Passer montanus) which have visited ornithophilousKniphofia (Liliaceae) in Berlin for several years.

     

Eine Excursion auf den Pyrgass

Ohne Zusammenfassung     

Eine Exkursion auf den Krainer Schneeberg

Ohne Zusammenfassung     

In Bezug auf den Farbenwechsel

Ohne Zusammenfassung     

Eine Exkursion auf den Krainer Schneeberg

Ohne Zusammenfassung     

Ein Ausflug auf den Biocovo in Dalmatien

Ohne Zusammenfassung     

Eine Exkursion auf den Krainer Schneeberg

Ohne Zusammenfassung     

Ein Ausflug auf den Berg Cavn

Ohne Zusammenfassung     

Beitrag zur Ornis der Philippinen

Ohne Zusammenfassung