Sapphire Flycatcher [Ficedula sapphire]
1 female seen at Mahananda FR at 600 masl

Verditer Flycatcher [Eumyias thalassina]
Fairly common in the mountains

Large Niltava [Niltava grandis]
1 seen at Samtar, 1 seen on the Pipeline trail, 2 seen near Tonglu, 4 seen at Hilley and 1 seen at lake Khecheoperi

Small Niltava [Niltava macgrigoriae]
3 seen at Samtar

Rufous-bellied Niltava [Niltava sundara]
Singles in the mountains

Pale-chinned Blue-Flycatcher [Cyornis poliogenys]
1 seen at Mahananda WS and 1 seen at Mahananda FR

Pale Blue-Flycatcher [Cyornis unicolor]
2 seen at Samtar

Blue-throated Flycatcher [Cyornis rubeculoides]
2 males seen at Mahananda WS

Pygmy Blue-Flycatcher [Muscicapella hodgsoni]
1 male seen at Samtar

Grey-headed Canary-flycatcher [Culicicapa ceylonensis]
Fairly common at Samtar, Lava and Hilley

Indian Blue Robin [Luscinia brunnea]
1 seen at Sandakphu

Orange-flanked Bush-Robin [Tarsiger cyanurus]
2 females seen at Neora, Lava

Golden Bush-Robin [Tarsiger chrysaeus]
1 seen at Mahananda FR, 1 male seen at Neora, 6 seen at Sandakphu, 2 seen at Hilley and 1 female seen at Varsey

White-browed Bush-Robin [Tarsiger indicus]
2 2K? seen at Sandakphu and 1 male seen below Sandakphu

Oriental Magpie-Robin [Copsychus saularis]
Singles in the lowlands and 2 at Kalimpong

White-rumped Shama [Copsychus malabaricus]
2 seen at Mahananda WS and 10 seen at Mahananda FR

Indian Robin [Saxicoloides fulicata]
2 seen near Mahananda WS and 2 seen at Delhi airport

Black Redstart [Phoenicurus ochruros]
3 seen at Mahananda WS, 1 seen at Lava, 3 seen at Sandakphu and 1 seen at Hilley At least the birds in Mahananda belonged to the race P. o. rufiventris

Hodgson’s Redstart [Phoenicurus hodgsoni]
1 female seen at the end of the Pipeline trail, Lava

White-throated Redstart [Phoenicurus schisticeps]
2 seen at Sandakphu

Blue-fronted Redstart [Phoenicurus frontalis]
Fairly common in the mountains

White-capped Water-Redstart [Chaimarrornis leucocephalus]
Singles near water

White-capped Water-redstart is found rather common along streams

Plumbeous Water-Redstart [Rhyacornis fuliginosus]
Singles near water

White-tailed Robin [Cinclidium leucurum]
1 heard 12 kms before Lava, 1 seen and 2 heard Varsey-Soreng, 5 heard around lake Khecheoperi

Little Forktail [Enicurus scouleri]
2 seen between Soreng and Pelling, 1 seen between Pelling and lake Khecheoperi

Black-backed Forktail [Enicurus immaculatus]
6 seen at Mahananda FR at roadside streams

Slaty-backed Forktail [Enicurus schistaceus]
2 seen along the Pipeline trail, Lava, 1 seen near Soreng and 1 seen between Pelling and lake Khecheoperi

Spotted Forktail [Enicurus maculates]
1 seen along the Pipeline trail, Lava

Common Stonechat [Saxicola torquata]
1 female seen at Mahananda WS

Grey Bushchat [Saxicola ferrea]
Singles in open country in the mountains
 

Spot-winged Starling [Saroglossa spiloptera]
Three flocks at Mahananda WS containing a total of 46 birds.

Chestnut-tailed Starling [Sturnus malabaricus]
1 seen at Mahananda FR

Asian Pied Starling [Sturnus contra]
Common in the lowlands

Common Myna [Acridotheres tristis]
Common in the lowlands

Bank Myna [Acridotheres ginginianus]
4 seen in Siliguri

Jungle Myna [Acridotheres fuscus]
4 seen at Calcutta airport

Hill Myna [Gracula religiosa]
Common at Mahananda

Chestnut-bellied Nuthatch [Sitta castanea]
Common at Mahananda and singles at Lava

White-tailed Nuthatch [Sitta himalayensis]
Singles to fairly common in the mountains

Velvet-fronted Nuthatch [Sitta frontalis]
9 seen at Mahananda WS

Eurasian Tree-Creeper [Certhia familiaris]
1 seen at Sandakphu

Rusty-flanked Tree-Creeper [Certhia nipalensis]
1 seen at Samtar, 1 seen at Lava, 6 seen at Sandakphu and 1 seen at Gairibas

Brown-throated Tree-Creeper [Certhia discolor]
1 seen along the Pipeline trail and 1 seen at Neora, Lava

Rufous-vented Tit [Parus rubidiventris]
Common at higher altitude

Coal Tit [Parus ater]
4 seen around Sandakphu and 1 seen at Varsey

Grey-crested Tit [Parus dichrous]
Fairly common at higher altitude on the Sandakphu trek, 1 seen at Varsey

Great Tit [Parus major]
3 seen at Mahananda WS, 1 seen at Lava
Sounds completely different from European Great Tits

Green-backed Tit [Parus monticolus]
Fairly common in the mountains

Winter Wren [Troglodytes troglodytes]
1 seen at Sandakphu

Yellow-cheeked Tit [Parus spilonotus]
1 seen at Samtar, 10 seen at Neora, Lava and 2 seen at lake Khecheoperi

Yellow-browed Tit [Sylviparus modestus]
Singles in the mountains

Black-throated Tit [Aegithalos concinnus]
10 seen at Samtar, 10 seen along the Pipeline trail, 2 seen at Neora and 1 seen at lake Khecheoperi

Rufous-fronted Tit [Aegithalos iouschistos]
Singles seen along the Sandakphu trek and 2 seen at Varsey

Sand Martin [Riparia riparia]
25 seen at Mahananda WS

Plain Martin [Riparia paludicola]
10 seen at Mahananda WS

Barn Swallow [Hirundo rustica]
Singles in villages