Migratory connectivity of south african cattle egrets (Bubulcus ibis, Ciconiiformes, Ardeidae)
AbstractTracking animals throughout the annual cycle is key to understanding their migratory connectivity and identifying conservation needs. Thus, Cattle Egrets (Bubulcus ibis) were ringed in 12 South African heronries and resighted from 1951 through 1987. Birds were ringed as chicks mostly in the Western Cape and Gauteng provinces. During this period, 46160 birds were ringed, with a total of 481 ringed birds recovered. In total, 76% of juveniles and 68% of adults were recovered two and more years after ringing, 0-100 km around their natal places. Most birds (52.9%) were recovered within 30 km of their natal colony, and only 9.4% of birds further than 1000 km from these sites. More than 2/3 of birds travelled in easterly and northern directions. Birds ringed in the former Transvaal winter in central Africa, Western Cape birds mostly winter on the eastern coast, and KwaZulu-Natal egrets winter in central and south-eastern Africa. The population from the interior is more migratory than thatfrom the coast.
|Journal series||Zoologichesky Zhurnal, ISSN 0044-5134, (A 15 pkt)|
|Keywords in English||migration; postnatal dispersal; philopatry; ringing; invasion biology|
|Score||= 15.0, 05-05-2020, ArticleFromJournal|
|Publication indicators||= 1; = 1; : 2016 = 0.341; : 2017 = 0.226 (2) - 2017=0.271 (5)|
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