Location: Thatcham
Marsh LNR
Session: 24-Jun-2018 05:30 to
10:30hrs
Headlines: Half way through the
CES season and after saying last week that Sedge Warbler numbers were on the
brink we captured more than one in this session including 4 juveniles. There are
still a few new Reed Warblers arriving/moving though and just one juvenile
captured, otherwise no surprises. A 33 total in the standard nets is below the
average of 42 for visit 06; range 1995-67 2014-23. Below is a chart showing
how Reed and Sedge Warbler captures are doing halfway through the season. As
can be seen Reed Warbler so far are doing quite well in comparison to previous
recent years whereas Sedge Warbler numbers have declined after a couple of
years of increasing numbers captured. We think (hope) the breeding season is a
little later this year, held up by the two periods of heavy rain early spring.
Maybe Sedge Warbler numbers will pick up over the next couple of visits,
before numbers are muddied by returning migrants. Unfortunately we don’t think
there are many breeding pairs in the immediate vicinity of our nets. Good
session though and we had time to sort out the worlds(not) as well!
Weather: Bright, sunny chilly
early, warm later, calm
Present: JL, IW, JHW, DL, RGS,
RDW
Nets: 228M in 3 rides: 198M
ride of standard reed bed net, 30M additional nets in scrub up from 0605 to
10:10hrs
Lure (none):
Capture (New/Recapture) Matching
visit 2017.06 (25-Jun-2017)
38(22/16) Visit 06
|
41(30/11)
|
Species
|
New
|
Rtp
|
Juv
|
Adult
|
BLABI
|
|
1
|
|
1
|
BLACA
|
1
|
|
|
1
|
BLUTI
|
2
|
|
2
|
|
CETWA
|
|
1
|
|
1
|
CHIFF
|
2
|
|
2
|
|
DUNNO
|
2
|
|
|
2
|
GRETI
|
2
|
|
2
|
|
REEWA
|
4
|
9
|
1
|
12
|
SEDWA
|
4
|
3
|
4
|
3
|
SONTH
|
|
1
|
|
1
|
WILWA
|
1
|
|
1
|
|
WREN
|
4
|
1
|
4
|
1
|
|
Species
|
New
|
Rtp
|
Juv
|
Adult
|
BLABI
|
1
|
|
|
1
|
BLACA
|
3
|
|
2
|
1
|
BLUTI
|
3
|
|
3
|
|
BULLF
|
|
1
|
|
1
|
CETWA
|
1
|
2
|
1
|
2
|
CHIFF
|
4
|
|
4
|
|
DUNNO
|
2
|
2
|
2
|
2
|
REEWA
|
10
|
8
|
5
|
9
|
SEDWA
|
3
|
|
3
|
|
WREN
|
3
|
|
3
|
|
|
Totals for the last ten visit 06
2009
|
2010
|
2011
|
2012
|
2013
|
2014
|
2015
|
2016
|
2017
|
2018
|
40
|
38
|
45
|
32
|
33
|
23
|
39
|
35
|
32
|
33
|
Recaptures: (16) all recent
except:
BLABI ringed 04/05/2013
CETWA ringed 11/09/2016
REEWA ringed 16/07/2017
SONTH ringed 26/04/2015
WREN ringed 16/07/2017
Sightings 43 Species: Ian’s list,
probably the notable species are a male Sparrowhawk and a Herring Gull. The list
shows 42 species as it misses Bullfinch calling mid-morning while Ian was
doing a net round and I forgot to mention it.
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