We arrived at the Chong Yen campsite at 17:30 the 14th, put up the tent and then it was dark.

Day 1: After a cold night (9C in the morning) I put up the camera to cover the valley for BIF where we've seen the Rufous-necked Hornbill flying before. I waited until 9am, no hornbill seen or heard. Just some Great, Golden-throated and Blue-throated Barbets seen and some warblers. Several Mountain Imperial Pigeons flying around and also a pair of Wedge-tailed Pigeons.
At the end of the access road we found a Red-throated Pipit. According to my birdbook it goes up to 400m and here we were at over 1300m, hm. A moment later a bird wave came in with White-hooded Babblers and some warblers. Unfortunately I had the handheld camera which turned out to be difficult to use because of my neck and arm pain. I went back and got the tripod and the 600 which was easier to carry despite being heavier. When I came back the wave was gone of course. At 10:30 some White-necked Laughingthrushes seen just 50m down the access road. They were high up and moving. A strange sound caught my attention, sounded like a bird working on the ground. It was a Large Scimitar Babbler digging for food on the hill side. He was high up the slope but I managed to grab some frames using live view. After about 20 min he disappeared up the slope out of sight. But it wasn't over yet, now a flock of 5-6 Coral-billed Scimitar Babblers came through and moved over the road and then further down. Very nice, 3 new photo-lifers in a short while.
After lunch we walked the Nature Trail but not much turned up. Black-throated Sunbirds are stationary here. Then we patroled the access road hoping to see some more bird waves. No more flocks but a Little Pied Flycatcher displayed for a short while. Another photo-lifer. My wife found a Radde's Warbler further down the access road.
In the evening we saw a lone Rufous-necked Hornbill flying over the valley. Its silhouette moved across the sky like an echo of the forest itself. Just beautiful.

Day 2: Warmer today, but still chilli. Started at the access road. Not much, a Blue Whistling Thrush entertained on the beginning of the access road and the usual bulbuls and warblers. Further down the road Pairaow photographed a White-necked Laughingthrush, a rarely pictured species. She also had a Red-headed Trogon close but it never moved into a good position. We had breakfast and then we split up covering the access road and the nature trail. At 8:30 a couple of Burmese Yuhinas in company with Mountain Bulbuls came to a small fruit tree 50 m down the acccess road. First time I see these rare Yuhinas, a greyish bird smaller than a bulbul and quite active. I made the mistake of moving in a little too fast and scared them away and they didn't come back. Bugger.
Then I moved through the campsite and at the beginning of the Nature trail a lot of birds! A big bird wave came though with many species. It was difficult with all these active birds moving through. Hard to decide which one to go for but a Speckled Piculet caught my attention. Piculets are a big favourite of mine but oh so hyperactive. He simply doesn't stay still and I didn't get any good pictures. Even at 1/400s he won't freeze. Anyway another photo lifer. The wave moved slowly down the hillside at the Nature Trail and lasted for almost an hour. I counted 21 species (not including the sunbirds) but it was probably more. The highlight was a flock of 5-6 Burmese Yuhinas which came to a small fruit tree right infront of my camera, thank you. I got some good captures of these highly sought after and rare birds. Could have been the same birds I saw just an hour earlier. After that hectic hour we had lunch.
In the afternoon I was covering the access road again and it delivers once again. At 2pm some White-necked Laughingthrushes came through and at the same time I spotted Coral-billed Scimitar Babblers (10) higher up. The Laughingthrushes did their best to avoid my camera but the Coral-bills display nicely and we got some good pictures. Interesting also to see how they work through the vegetation and to learn their calls. Quite shy birds and you need to move ahead of them and wait, then they may come close. While covering the Coral-bills a male and female White-browed Shrike-babbler came close and also a Stripe-breasted Woodpecker which Pairaow photographed earlier behind the staff accommodations.
When things got quiet we moved down the Nature Trail again to cover a nice flower hoping the Black-throated Sunbird will pay a visit. It didn't but we saw 4 Rufous-fronted Partridges moving over the trail, nice indeed. We didn't get any good photos of the partridges but bits and pieces, enough for an accurate id.

Day 3: Started at the access road again. Had problem with fog on the lens. The temperature was raising quickly and kept my lens slighly foggy. At 8am a flock of 6-7 Striated Yuhinas came to a small fruit tree. Very active birds which didn't stay long before moving up the slope. On the other side of the road I noticed some small birds moving around. I moved closer and found a flock of 5-6 Black-throated Parrotbills. What a bonus! But taking a picture was far from easy. These are some of the most hyperactive birds there is. They bounced around right infront of me but I only managed to get a few shots, nothing good. Anyway my 6th photo-lifer here at Chong Yen. Not bad.
After that treat I went back to the car to pack and leave when the Blue Whistling Thrush came to the campsite and moved around for a while. Charming bird.

Complete list of species seen at Mae Wong (* means part of the big bird wave):
Rufous-necked Hornbill (1)
Large Scimitar Babbler (1)
Coral-billed Scimitar Babbler (2 flocks)
White-browed Scimitar Babbler (2) *
White-necked Laughingthrush (flocks seen 3 times)
Burmese Yuhina (2 flocks) *
Striated Yuhina (1 flock)
White-bellied Yuhina (1 seen as part of big bird wave)
Flavescent Bulbul (common) *
Mountain Bulbul (common) *
Red-headed Trogon (1)
White-browed Shrike-babbler (1 male and 2 females) *
Little Pied Flycatcher (1 male)
Yellow-cheeked Tit (3) *
Niltava (female probably Large) (1)
Black-throated Sunbird (male and female stationary)
Rufous-throated Partridge (4)
Stripe-breasted Woodpecker (probably 1 male seen twice)
Short-billed Minivet (male and females) *
Grey-chinned Minivet (male and female)
White-throated Fantail (2) *
Grey-cheeked Fulvetta (several) *
Rufous-winged Fulvetta (1) *
Rufous-backed Sibia (2 or 3) *
White-hooded Babbler (1 flock)
Grey Treepie (several) *
Maroon Oriole (1) *
Silver-eared Mesia (1) *
Speckled Piculet (1) *
Radde's Warbler (1) (or Dusky)
Grey-headed Canary Flycatcher (several) *
Little Cuckoo Dove (1)
Wedge-tailed Green Pigeon (3)
Blue Whistling Thrush (stationary)
Blue Rock Thrush (2)
Flavescent Bulbul (many) *
Mountain Bulbul (many) *
Yellow-browed Warbler (common) *
Omei Spectacled Warbler (common) *
Streaked Spiderhunter (stationary)
Red-throated Pipit (1)
Mountain Imperial Pigeon (several flying)
Greater Coucal (along the road)
Golden-fronted Leafbird (2)
Greater Racket-tailed Drongo (several)
Lesser Racket-tailed Drongo (1)
Red-billed Blue Magpie (lower down the mountain)
Golden-throated Barbet
Blue-throated Barbet
Great Barbet
Grey-backed Shrike
Blue-winged Minla (*)