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Dispersal of little egrets Egretta garzetta from northern Spanish Atlantic colonies
Citation
Galarza, A and Arce, F and Navedo, JG and Arizaga, J, Dispersal of little egrets Egretta garzetta from northern Spanish Atlantic colonies, Ardeola, 63, (2) pp. 375-382. ISSN 0570-7358 (2016) [Refereed Article]
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DOI: doi:10.13157/arla.63.2.2016.sc4
Abstract
We studied the movements of little egrets Egretta garzetta from breeding colonies in northern Spanish Atlantic estuaries using sighting data of colour-ringed birds. Data on 304 resightings of 95 out of 457 little egrets ringed as chicks in two colonies on the southern Bay of Biscay were analysed. Most egrets (68.9%) were observed less than 50 km from their natal colonies and thus exhibited low dispersal, supporting the view that these birds belong to a resident population breeding along the coasts of the Bay of Biscay. Nearly all resightings (95.5%) occurred in estuaries across an east-west axis corresponding to the Atlantic coast of northern Spain and had a west-biased dispersal direction. We suggest that the recently formed northern Atlantic Spanish population is a consequence of a westward colonisation pattern originating in the French Atlantic colonies.
Item Details
Item Type: | Refereed Article |
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Keywords: | estuaries, herons, Iberian Peninsula, natal dispersal, waterbirds |
Research Division: | Biological Sciences |
Research Group: | Ecology |
Research Field: | Community ecology (excl. invasive species ecology) |
Objective Division: | Environmental Management |
Objective Group: | Coastal and estuarine systems and management |
Objective Field: | Coastal or estuarine biodiversity |
UTAS Author: | Arce, F (Mr Fernando Arce Gonzalez) |
ID Code: | 114351 |
Year Published: | 2016 |
Web of Science® Times Cited: | 2 |
Deposited By: | Ecology and Biodiversity |
Deposited On: | 2017-02-14 |
Last Modified: | 2018-04-19 |
Downloads: | 0 |
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