I just checked my Cuc Phuong list and there were 35 species, maybe 25 of which were single sightings (over three days).
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Wow that's worrying :eek!: what time of year were you at Cuc Phuong? I was there for a few days in Jan 2008 and was blown away by the huge variety of bird species. This from my report at the time:-
"....So back to some proper fun jungle birding. We took a local bus from the old city in Hanoi to Giap Bat bus station, from where we caught a bus to Nho Quan, which is 13km from Cuc Phuong park HQ. From here we took motorcycle taxis to the HQ. The total cost from Hanoi was about $5 each and it took about 3 hours. We stayed 1 night at HQ, had a great morning's birding with a birder we at HQ (Hi Paul !) and walked the 20km to Bong arriving at dusk. We stayed 3 nights at Bong and then walked back to Hq to spend another night there before making our way to Ninh Bin.
Birding was fantastic throughout the park, at the botanical gardens (G), all along the road (R) to Bong (B), and on the trails around Bong. I was on a real roll here and still buzzing on the murrelet (at that stage !). I ended up seeing far more of the specialities than I expected to, doing pretty well for a plonker like me without a tape recorder. With a whopping 70+ new birds for the trip, of which more than 20 were new, it's hard to pick out highlights, but goodies included the male Silver Pheasant that walked across the road right in front of us (near B), Limestone Wren-Babbler (2 R, c200m before the prehistoric man cave), Pied Falconet (1 G ,1B), Brown Hornbill (party of c8 B), Blue-rumped and Bar-bellied Pittas (1 of each R, near B) and yes Gav they do patter with tiny feet , Chestnut-necklaced Partridge (twice R, near B), Ratch and Rack et-tailed Treepies, White-winged Magpie (the latter eventually on the last morning at B then also R and G), Red-vented Barbet (1 R), cracking male Grey-backed (G) and Black-breasted (B) Thrushes, Asian Stubtail (2 B), Rufous-tailed Robin and Lesser Shortwing (1 of each B) and cracking parties of Silver-breasted and Long-tailed Broadbills (B). Some birds I'd never seen before were common, ie Green-eared Barbet, Rufous-throated and Black-browed Fulvettas, and Japanese Thrush. And so on (see additions to trip list below for more). We also had some good birds seen earlier on the trip eg Fukien Niltava and Collared Owlet.
Identification challenges were catered for by the warbler department. Seicercus warblers were too numerous to ignore and I figured that the commonest form (c20 grilled) were Bianchi's Warbler. These birds foraged generally in the open with parties of fulvettas, phylloscs and Striped Tit-Babblers at or above head height. They all had yellow greater covert wing-bars, some very striking ones. They had eliptical yellow eye-rings and not very extensive fairly pale grey on the crown. I couldn't make out any calls that were definitely attributable to them. Another form (only a couple seen) seemed not, or loosely allied to other feeding birds, fed low in denser cover, had round eye-rings, more extensive darker grey crowns, more saturated yellow and green plumage tones, more prominent black lateral crown stripes and one of them went "Chu-chu", which I reckoned sounded like Frank "Seicercus-man" Rheindt's rendition of what Grey-crowned Warbler sounded like. Good enough for me. A few "Blyth's Leaf Warblers" went unidentified, and there were totally invisible Bush-Warblers in frustrating profusion. The exception was one Bradypterus warbler that provided prolonged exceptionally close views of virtually all of it except the lower mandible. Cracking views of the undertail coverts showed that it lacked the obvious pale tips that should be on Russet-Bush Warbler which according to Robson would be the most expected species at this altitude and range. After looking at Oriental Bird Images I figured this bird was a Brown Bush-Warbler, which should be at a higher elevation. Other trip reports have noted both Chinese and Brown for this site though, Brown in a report by N Dymond. I'm prepared to be told I'm wrong on this one ! I can give a description if anyone's interested...."
And these were just the additions to our trip list at the time from Cuc Phuong, having just already spent a month in China. So I'd rate it as a top notch birding site!:
"....
302 Ashy Drongo
303 Stripe-throated Bulbul
304 Dark-necked Tailorbird
305 Grey-eyed Bulbul
306 Black-crested Bulbul
307 Striped Tit-Babbler
308 Red-headed Trogon
309 Crimson Sunbird
310 Puff-throated Babbler
311 White-rumped Shama
312 GREEN-EARED BARBET
313 Black-browed Fulvetta
314 PIED FALCONET
315 Common Iora
316 Great Iora
317 Brown Shrike
318 Sultan Tit
319 Grey-crowned Pygmy Woodpecker
320 RUFOUS-THROATED FULVETTA
321 Grey-backed Shrike
322 Blue-winged Leafbird
323 JAPANESE THRUSH
324 RACKET-TAILED TREEPIE
325 SULPHUR-BREASTED WARBLER
326 Puff-throated Bulbul
327 Lesser Coucal
328 Orange-bellied Leafbird
329 Scarlet-backed Flowerpecker
330 RATCHET-TAILED TREEPIE
331 GREY-BACKED THRUSH
332 Banded Bay Cuckoo
333 White-bellied Yuhina
334 BROWN BUSH-WARBLER
335 RED-VENTED BARBET
336 Indochinese Cuckoo-Shrike
337 Maroon Oriole
338 Grey-throated Babbler
339 Greater Racket-tailed Drongo
340 Lesser Yellownape
341 LIMESTONE WREN-BABBLER
342 Scaly-crowned Babbler
343 Emerald Dove
344 Yellow-bellied Warbler
345 CHESTNUT-NECKLACED PARTRIDGE
346 BLACK-BREASTED THRUSH
347 Asian Stubtail
348 WHITE-TAILED FLYCATCHER
349 BLUE-RUMPED PITTA
350 RUFOUS TAILED ROBIN
351 Rufescent Prinia
352 Silver-breasted Broadbill
353 BIANCHI'S WARBLER
354 Buff-breasted Babbler
355 BROWN HORNBILL
356 GREY-CROWNED WARBLER
357 Crested Goshawk
358 Greater Yellownape
359 BAR-BELLIED PITTA
360 Common Flameback
361 Green Magpie
362 Red Junglefowl
363 Silver Pheasant
364 Scarlet Minivet
365 Black-winged Cuckoo-Shrike
366 Bronzed Drongo
367 Streaked Spiderhunter
368 WHITE-WINGED MAGPIE
369 Lesser Shortwing
370 Long-tailed Broadbill
371 Black Eagle
372 Crested Serpent-Eagle
373 Bar-winged Flycatcher-Shrike
374 Green-billed Malkoha
375 Large Woodshrike
......."