Alosa eurasiàtica: diferència entre les revisions

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* [http://www.saffie.info/files/BPG%20Undrilled%20Patches%20for%20Skylarks%20June%202004.pdf pdf download about skylark conservation on SAFFIE website - includes a photograph of a skylark plot]
* [http://www.rspb.org.uk/countryside/farming/advice/farmhabitats/skylarkplots/index.asp Skylark plots], [http://www.rspb.org.uk/birds/guide/s/skylark/index.asp the skylark], and the [http://www.rspb.org.uk/countryside/farming/vandfa/index.asp the RSPB's Volunteer & Farmer Alliance] on RSPB website
* [http://www.rspb.org.uk/science/Ecology/2001/skylark_ecology.asp Skylark ecology on RSPB website]
* [http://www.ibercajalav.net/img/302_SkylarkAarvensis.pdf Ageing and sexing (PDF) by Javier Blasco-Zumeta]
* [http://www.ukbap.org.uk/UKPlans.aspx?ID=80 UKBAP site description]
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