Larus armenicus

(last update: 24-1-2011)

Coordinators:
Amir Ben Dov (Israel)
Mars Muusse (Netherlands)

2cy armenicus: August

Primary Moult Scores (PMS) in 2cy armenicus

On 27 August 2010, Larus armenicus were checked at Bet Shean Valley, Israel by Amir Ben Dov. About 350 gulls were present at Harod Valley and about 250 at Bet Shean Valley (Neve Eitan). Interestly, about 80% of the inland gulls were in adult plumage at this date (27 Aug 2010), while only 20% were adults at the location at the coast, in Maagan Michael on 18 and 24 August 2010. At Bet Shean, 30 birds were examined carefully for their primary moult stage, see the table below. The most common patterns for adult birds were P4/P8 in 5 birds, P3/P7 in 6 birds, P4/P7 in 5 birds.

Moult scores in 2cy L. armenicus at Bet Shean, 27 August 2010:

P10=70% (PMS = 49).

PMS in 2cy armenicus, 27 Aug 2010 at Bet Shean.
Old & new primaries. Scores: Amir Ben Dov.
.
P7 new
P8
P9
P10
total
P7 old
.
.
.
.
.
P8
.
.
.
.
.
P9
.
.
.
.
.
P10
.
.
.
.
.
no old prims
.
.
1
.
1
total
.
.
1
.
1

PMS in 2cy armenicus, 18 Aug 2010 at Maagan Michael.
Old & new primaries. Scores: Amir Ben Dov.
.
P7 new
P8
P9
P10
total
P7 old
.
.
.
.
.
P8
.
.
.
.
.
P9
1
.
.
.
1
P10
.
.
.
.
.
no old prims
1
1
.
.
2
total
1
1
1
.
3

.

Larus armenicusLarus armenicus 2cy August 18 2010, Maagan Michael, Israel. Picture: Amir Ben Dov. With old outer primaries.
Larus armenicusLarus armenicus 2cy August 18 2010, Maagan Michael, Israel. Picture: Amir Ben Dov. No old outer primaries.
Larus armenicusLarus armenicus 2cy August 18 2010, Maagan Michael, Israel. Picture: Amir Ben Dov. P8 fully grown.
Larus armenicusLarus armenicus 2cy August 24 2010, Maagan Michael, Israel. Picture: Amir Ben Dov. Staffelmauser.
Larus armenicusLarus armenicus 2cy August 05 2011, Maagan Michael, Israel. Picture: Amir Ben Dov.