Age-related testosterone changes and corresponding song patterns in Red-whiskered Bulbul (Pycnonotus jocosus Linnaeus, 1758)

• Main Authors: Panas Tumkiratiwong, Darika Manathamkamon, Rattanawat Chaiyarat, Kan Khoomsab
• Format: Article
• Language: English
• Published: Penerbit Universiti Kebangsaan Malaysia 2021
• Online Access: http://journalarticle.ukm.my/17399/1/2.pdf; http://journalarticle.ukm.my/17399/; https://www.ukm.my/jsm/malay_journals/jilid50bil5_2021/KandunganJilid50Bil5_2021.html
• Institution: Universiti Kebangsaan Malaysia

We monitored total testosterone profiles and song patterns of 12 males and 2 females Red-whiskered Bulbuls (Pycnonotus jocosus), aged 5-10 months. Each bird was maintained in a cage sized of 38 × 38 × 50 cm and raised in a 22 °C-controlled room-sized of 6 × 10 × 3.5 m. The song prototype was pla...