willow warbler, phylloscopus trochilus

animal animalia ave bath beak biodiversity biologist biology biotope bird birder birding birdlife birdwatcher birdwatching calm castile castilla chordata conservation drink ecology ecosystem ecotourism environment europe european fauna feathers forest free habitat history lake leon mosquitero musical natural nature ornithologist ornithology outddor paseriforme passerine phylloscopus plumage pond pool portrait relax river riverside sanctuary songbird spain spanish sylviidae thirst trochilus vertebrate warbler water waterside wet wild wildanimal wildland wildlife willow wings zoology