26 February 2026

Bat Id La Lanca dam Sierra Andujar, Spain

Can anyone help identify these bats from La Lanca Dam, Sierra Andujar September 2025. Im unsure of the number of species. All photos taken and copyrighted by Mikkel Willemoes.

I brought a bat detector and the Myotis sp. seemed to have a frequency at 27-29 Hz when calling at night.

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Post author

Lars Michael Nielsen
Conservationist and guide. Father of two. I’ve worked with education and guiding most of my life but at the moment im working in an engineering company with tasks conserning protected species and nature. I’m one of those birders turned more and more into the amazing world of mammals and got hooked. I don’t knwof if i have any favorite mammals but seing Iberian Lynx in Spain and Humpback Whales at an arms length in the Ice Fjord of Ilulissat was amazing experiences. I was born in a hut in the Swedish forests and grew up partly there and partly in Denmark where i live now with my two daughters.    
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3 Comments

  • 27 February 2026
    Jean Michel BOMPAR

    Top left and the two on bottom : Myotis myotis/blythii (not enough visible criteria for discrimination). Is it possible to receive better views or zoom for the two on the top right (especialy the head) ? Thanks

  • 27 February 2026
    Petter

    To me the smaller greyish bats with small ears looks like Miniopterus schreibersii. Top middle and top right pictures.

  • 27 February 2026
    Jean Michel BOMPAR

    It might be a Miniopterus, but I don’t think so. To me, the forehead isn’t domed enough, and there seems to be a depression on the back edge of the ears (the back edge is regularly rounded in Miniopterus).

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