bnc-flying phobjikha_jan-2014


bnc-flying phobjikha_jan-2014
With the completion of winter migration, the total number of Black –necked Cranes sighted in the country across all the habitats are monitored as usual and recorded by conducting a simultaneous count coordinated by the Royal Society for Protection of Nature. The count helps in understanding the population trend of the cranes. The count is normally carried out when the cranes are in their roosts.

For this season the annual count was conducted on 17th January 2014 at 0600 Hrs. The date was fixed in close consultation with all the stakeholders, i.e. the Forest Beat Office and Gangtey Aman Kora resort in Phobjikha; Khotokha Range Office; Wangchuck Centennial Park and Ugyen Wangchuck Institute for Conservation and Environment in Bumthang and Bomdiling Range Office and Bomdiling Wildlife Sanctuary in Trashi Yangtse.

bnc phobjikha_jan-2014

In Phobjikha, since there were several roosting areas, three teams were formed for the count. Aman Kora staff led by the Lodge host, Mr. Jigme, conducted the count at Aman roost; Mr. Rinchen from Jigme Singye Wangchuck National Park and I conducted the count for the four main roosting areas opposite to the Black-necked Crane Information Centre and Mr. Dampai from Beat Office did the count for the roost near the old Phobjikha Middle Secondary school.

For obtaining accurate number, three counting methods were used. The first being direct count using spotting scopes in all the roosts. This method required repeated counting of the cranes for at least four times. The total number of these four counts is averaged to give the final number. The second method used was through photography. Cranes in their different roosts were photographed and counted in a computer monitor. The final counting method was counting the departures from the roost. This method was very reliable, however requires a lot of time.

Findings:

For Phobjikha, using these three counting methods, the following count was obtained:

Roost
Adult
Juvenile
Total
Aman Roost
8
1
9
Below RNR centre roost
88
5
93
Old roost
29
3
32
New roost
204
29
233
Above New roost
37
4
41
Below Phobjikha MSS roost
4
4
GRAND TOTAL
422 (42 Juveniles)

 For rest of the habitats in Bhutan, using the direct count method, the following result was obtained:

Habitat
Adult
Juvenile
Total
Bumthang
9
9
Bumdeling(Trashi Yangtse)
93
19
112
Khotokha (Wangduephodrang)
5
2
7
GRAND TOTAL
128 (21 Juveniles)

BNC Population in Bhutan 1986-2013

Winter Periods
Khotokha
Phobjikha
Bumdeling
Bumthang
National Total
1986-1987
30
120
200
20
370
1987-1988
20
122
160
30
332
1988-1989
30
120
200
20
370
1989-1990
11
102
169
15
297
1990-1991
10
111
152
12
285
1991-1992
6
102
139
8
255
1992-1993
16
175
175
8
374
1993-1994
7
195
203
0
405
1994-1995
16
208
177
23
424
1995-1996
13
212
144
16
385
1996-1997
7
223
136
14
380
1997-1998
8
219
181
15
423
1998-1999
7
240
146
18
411
1999-2000
6
244
155
10
415
2000-2001
4
248
151
6
409
2001-2002
4
262
169
7
442
2002-2003
8
269
155
9
441
2003-2004
6
270
150
5
431
2004-2005
4
352
149
12
517
2005-2006
7
353
141
9
510
2006-2007
7
317
123
12
459
2007-2008
6
292
130
12
440
2008-2009
11
322
116
8
457
2009-2010
9
326
123
4
462
2010-2011
3
347
94
8
452
2011-2012
5
335
102
5
447
2012-2013
7
368
107
5
487
2013-2014
7
422
112
9
550

Reported by: Jigme Tshering, Field Coordinator, Phobjikha

BNC Population in Bhutan 1986-2013