Part 146 - Collecting in Trashiyangsi valley with exit via Dewangiri; troglodytid series and East Bhutan records

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SUMMARY:
After the flowering season, the party spent three months collecting birds and seeds, moving slowly through the Trashiyangsi valley, revisiting Sakden, and exiting via Dewangiri on 15 Nov. Around 750 skins were obtained, with emphasis on Troglodytidae and other notable species, including range extensions from the East Bhutan frontier and large flocks of grosbeaks at Dewangiri. Notes include a reference to a description of the Yongbon Chu valley and remarks on the Dongkar–Cho La–Me La route used by Bhutanese coolies from the Tawang area.

CONTENT:
Ibis 16

The height of the flowering season was now passed and during the ensuing 3 months we devoted all our time to the collecting of birds and seeds. We moved very slowly, making prolonged halts at various places in the Trashiyangsi valley and again visited Sakden. We finally made our exit via Dewangiri on 15 Nov.

Nearly 750 skins were obtained during these last 3 months. We paid particular attention to the Troglodytidae and secured large and carefully sexed series of

Ibis 254 Pnoepyga albiventer albiventer - Wren Ibis 254-5
Ibis 255 Pnoepyga pusilla pusilla - Scaly Wren Ibis 255-6
Ibis 256 Tesia cyaniventer - Ibis 256-261. Slaty-bellied Wren
Ibis 261 Tesia castaneocoronata Ibis 261-262 Wren

which have helped to elucidate several problems connected with the family.

We also obtained specimens of
Ibis 252 Elachura formosa - Ibis 252
Ibis 253 Spelaeornis caudata - Wren Ibis 253
Ibis 253 " souliei sherriffi - 4 more skins of this new race Ibis 253

Also obtained on the East Bhutan frontier - thus a considerable extension westward of their previous known range - were

Ibis 30. Garrulax gularis - Laughing Thrush Ibis 30.
Ibis 488 Harpactes wardi - a rare Trogon - Ibis 488-9. - Ward's Trogon

We were rather astonished to find Mycerobas melanozanthos (Grosbeak) in large flocks in tropical forest at Dewangiri Ibis 468.

Ludlow. p 102-3. -
description of Yongbon Chu valley etc.

p 104. The Dongkar, Cho La, Me La route is well frequented and many Bhutanese coolies use it on their way from Tawang area to Dongkar. It is fit for pack transport although in places the track is a bad one.

Deb La Trash
Deb La Trash
" "

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