The nest and nestlings of Cape Verde Cane Warbler Acrocephalus brevipennis PDF
Preview The nest and nestlings of Cape Verde Cane Warbler Acrocephalus brevipennis
The nest and nestlings of Cape Verde Cane Warbler Acrocephalus brevipennis PeterCastell CinqnidsdelaRousserolleduCap-VertAcrocephalusbrevipennisontetetrouvesaSantiago,auxlies duCapVert, du 25au27octobre 1998. Ilsetaientconstruitsdansdesroseaux,suspendusadeuxtiges aunehauteurde 1,3a 2,3 m. Certains nidscontenaientdesoeufset un nidcontenait trois jeunestout juste eclos. Les jeunes, jusqu’alors non decrits dans la litterature, etaient nus et noiratres, avec des commissuresjaunepaleetunebouchejaune-orange.Ilsavaientunetacheovalenoiredechaquecote de la langue. Apparemment, les oeufs eclosent simultanement. D 2 uring 25-27 October 1998, 1 foundfive nests ofCape WMer VerdeCane AcrocephalusbrevipennisintheSao Jorgevalley,ontheislandofSantiago,CapeVerdeIslands. Eachnestwasconstaictedinreedsandsuspended between two main reedstems, whereas most Acrocephaluswarblerswithsimilarnests,suchasReed A.scirpaceusandGreatReedWarblersA.arundinaceus usuallysuspendtheirnestsbetweenatleastthreestems. m The lowest nestwas 1.3 above the ground and the highestwas 2.3m. Thenestswereintermediate insize between those ofReed and Great Reed Warblers. On 27 October, the five nests contained: (1) a complete clutch of two eggs, (2) ready for eggs 1 (almostreadyon25October),(3)twoeggs(onlyone on25October),(4)afullclutchofthreeeggs,and(5) three newly hatched young. NeitherCramp1 norHazevoet includeadescriptionof thenestlingsofthisspecies.Theyarenakedwithdark,almost black, skin, pale yellow gape flanges and orange-yellow mouths,andtwoovalblackmarkingsindiemouth,oneon eithersideofthetongue.Theycloselyresemblethenestlings of other species ofAcrocephalus. All three young were identicalinsizeandhatchingwas,therefore,synchronous,(f References 1. Cramp, S. (ed) 1992. The Birds of the Western Palearctic. Vol 6. Oxford: Oxford UniversityPress. 2. Hazevoet, C.J. 1995. TheBirds ofthe Cape Verde Islands: an annotatedcheck-list. B.O.U. Check-list No. 13- Tring: British Ornithologists’ Union. Fairlawn, 679ChesterRoad, GreatSutton,South Wirral L662LN, UK. 1. HabitatofCapeVerde CaneWarblerAcrocephalus brevipennis, SaoJorgevalley, Santiago, CapeVerde Islands, October 1998 (PeterCastell) 2. Nestand eggs ofCapeVerde CaneWarbler Acrocephalusbrevipennis(PeterCastell) 3. Newlyhatchednestlings ofCapeVerde CaneWarbler Acrocephalusbrevipennis(PeterCastell) 100-BullABC Vol6No2 NestandnestlingsofCape VerdeCane Warbler. Castell
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