Zusammenfassung
Unter 12 mit Eiern belegten Nestern vonCerthiaxis cinnamomea in Surinam wurden 8 vonTapera naevia belegt. Von 13 Eiern vonTapera waren 6 weiß, 6 blau-grün und eins bläulich-weiß. In einem Nest vonSynallaxis gujanensis wurde während der Eiablage des Wirtes ein weißes Ei vonTapera gelegt. Ein zweites blau-grünesTapera-Ei wurde hinzugelegt, als die Eier 4–10 Tage bebrütet waren. Aus dem erstenTapera-Ei schlüpfte nach 15 Tagen Bebrütung der Jungvogel. DieSynallaxis-Jungen schlüpften nach 18 Tagen. Der Jungvogel vonTapera ist beim Schlüpfen nackt und rosa gefärbt. Seine Haut verfärbt sich nach 2 Tagen in Violett. Die Jungen des Wirts verschwanden einen Tag nach dem Schlüpfen, der junge Kuckuck war an diesem Tag doppelt so groß wie sie. Er wurde von beiden Pflegeeltern gefüttert und wuchs schnell heran. Am 6. Lebenstag zeigten sich die ersten Blutkiele, aus denen am 9. Lebenstag die ersten Federspitzen hervorbrachen. Am 18. Lebenstag verließ der junge Kuckuck das Nest, bevor er voll flugfähig war.
Summary
Additional records on the parasitic Cuckoo,Tapera naevia and its hosts in Surinam as a continuation of a previous article (Haverschmidt 1955).
Of 12 nests ofCerthiaxis cinnamomea 8 were parasityzed byTapera. Of 13 eggs ofTapera 6 were bluish green, 6 white and 1 bluish white.
A couple ofSynallaxis gujanensis started nestbuilding in the author's garden on November 23, 1960. The first egg was laid on December 15 (nestbuilding 23 days). This egg disappeared on December 16, another egg was laid on December 17, and on December 18 the nest contained 3 white eggs: 2 ofSynallaxis and 1 ofTapera. At the next inspection on December 31 the nest contained 4 eggs: 3 white eggs (2 ofSynallaxis and 1 ofTapera) and a bluish green egg ofTapera. The whiteTapera-egg hatched on January 2 (incubation period 15 days). The nestling cuckoo was naked and of a pinkish colour, its gape was orange yellow. On January 5 the 2 eggs ofSynallaxis hatched (incubation period 18 days). Apart from a few downs on the crown they were naked, of a pinkish colour and their gape was yellowish orange. On this date the nestling cuckoo had a violet colour and was twice as big as the nestlingsSynallaxis. The bluish greenTapera-egg had disappeared. On January 6 the 2 nestlings ofSynallaxis had disappeared. They were not present on the open sandpath under the shrub containing the nest where the author must have found them in case they were thrown out of the nest by the nestling cuckoo. The author is of opinion that the nestlingSynallaxis died because they got no food as the much bigger young Cuckoo got all and that they were removed after their death by their parents. The nestling Cuckoo grew very rapidly; at the age of 10 days it had sprouting feathers and it was feathered at the age of 14 days. It uttered a chirruping sound constantly. It left the nest at the age of 18 days though it was not yet able to fly well.
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Literatur
Friedmann, H. (1933): A contribution to the life-history of the Crespin or Four-winged Cuckoo,Tapera naevia; Ibis (13) 3, S. 532–538.
Haverschmidt, F. (1955): Beobachtungen anTapera naevia und ihren Wirtsvögeln in Surinam; J. f. Orn. 96, S. 337–343.
Heinroth, O. und M. (1924–1926): Die Vögel Mitteleuropas. Berlin.
Skutch, A. F. (1945): Incubation and nestling periods of Central American birds; Auk 62, S. 18.
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Haverschmidt, F. Der KuckuckTapera naevia und seine Wirte in Surinam. J Ornithol 102, 353–359 (1961). https://doi.org/10.1007/BF01671662
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DOI: https://doi.org/10.1007/BF01671662