Waterfowl marking in Portugal: main results and future perspectives

• Author(s): Fabião, António ; Rodrigues, David ; Figueiredo, Maria Ester ; Tenreiro, Paulo
• Date: 2006
• Persistent ID: http://hdl.handle.net/10400.5/1270
• Origin: Repositório da UTL
• Subject(s): waterfowl; marking; Portugal
• Document Type: Part of book or chapter of book
• Language: English

Description

The recent integrated monitoring of some Portuguese waterfowl populations has allowed several studies of their ecology, biology and management (Figueiredo 2003, Rodrigues 2001, Rodrigues & Fabião 1997, Rodrigues & Tenreiro 1996, Rodrigues et al. in press). This paper reports and discusses some results related to capture and marking processes used with waterfowl in Portugal. We started the regular capture of waterfowl in Portugal in June 1993, and by the end of March 2004 we had marked 7 519 ducks and 1 047 rails. We also nasal-saddled ducks and obtained more than 21 000 resightings. The use of nasal saddles on ducks improved the results obtained (e.g. information on Mallard international movements increased 225%) and allowed new data analyses.