Chim cũng thích ’môn đăng hộ đối'
ôi chim manh manh. Ẩnh: Max Planck Institute for OrnithologyNhững con cái ở đẳng cấp thấp cũng sẽ thích những con đực ở đẳng cấp thấp, ít nhất là trong thế giới loài chim.Đây là nghiên cứu của Marie-Jeanne Holveck thuộc Trung tâm chức năng và tiến hóa ở Montpellier, Pháp đăng trên tạp chí Royal Society. Nghiên cứu thí nghiệm trên loại chim manh manh (một loài sẻ). Những nhà sinh học trước đây nghĩ rằng những con cái sẽ thích những con đực tốt nhất hiện diện quanh chúng.
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buG7lXUwdOG7kzBlw63hu4fDujB1acO5MHfhu4kwZMWpw6EwaMOt4budw60wdeG7rTBvacOt4bq/bzBsacOtMGThuqVvMG9p4bqxZDBt4butw6EwZGnhu49vMGPhuqNvMGXhu6PDreKAnSE+cXvigJxFw63hu4fDujBv4bqhw70wZGnDszB1aeG6p8O9LjBu4buRw60wdXPhu6nhu6NvaDBu4bqhMG7hu5V1MGTDoDB1aeG7hTB04buTb2gwdXPDs29oMGXDsjB0w6owZMOyMMOjb2kwaeG7qeG7oW9oMG7huqNvaTBuw6owZeG7gW8wecO6MGnhu6nhu51vaDBj4buJMGnhuqdxMMSRYm8wd+G7hzBow63hu53DrTBkxanDoTBkw6AwdWnhu4UwZcOyMGxpw60wdXPhu6nhu6FvaDB1aeG6oW9p4oCdITBVacOpw7MwV2/DqXlxc8OpdHQ=