👥⛰️👥

#geographic isolation #speciation #population separation #biogeography #reproductive isolation

🐦→🏞️→

#allopatric speciation #geographic isolation #reproductive isolation #new species #divergence #birds

(💜🐠+💚🐠)🚫❤️

#reproductive isolation #biological species concept #speciation #new species #postzygotic isolation #prezygotic isolation #sympatric speciation

🧬🔗❓

#biological species concept #reproductive isolation #interbreeding #defining species #speciation question