Indochinese Blue-flycatcher or Cyornis sumatrensis, formerly called the Tickle’s Blue-flycatcher is one of the most common Flycatchers in Thailand readily found in any forest in different elevations. Though common, it is beautiful and the orange breast of the male plus blue feathers make it really something to photograph all the time.
After confirming with Ayuwat Jearwattanakanok about the the status and issue of this bird, he conformed the change of name from Tickle’s Blue-flycatcher to Indochinese Blue-flycatcher by the reason of: Hitherto treated as conspecific with C. tickelliae, but differs in its (in female) lack of blue brow-flash (2); browner, less blue upperparts (1); darker rufous breast (1); and (in male) song a clear descending trend (most phrases with first notes higher and last notes lower) and phrases with fewer than 10 notes vs song of fast tinkling notes (typically 10 to a phrase; score 1) which randomly change in pitch without a descending trend (2). Some evidence of hybridization also between present species and C. banyumas in Malay Peninsula. Three subspecies recognized. Handbook of the Birds of the World. https://www.hbw.com/species/indochinese-blue-flycatcher-cyornis-sumatrensis Now I want the real Tickle’s Blue-flycatcher and where to find it is the next challenge.
Phu Toie National Park
April 27, 2019
Nikon D500 + Nikkor 200-500mm f/5.6E ED VR
Fotopro E9| Fotopro LH-10A
Carry Speed FS-Pro| OSKA Nik EN-EL 15
Nitecore UNK1 | Toshiba FlashAir 64GB