Friday, 20 July 2018

Meisen Wood: Red June


Nets: 120m plus nest boxes
Weather: hot
Ringers: CS and EB

Species
Ringed
Re-trapped
Pulli
Total
Blackbird
3
5
1
9
Blackcap
6
1

7
Blue Tit
15
14
5
34
Bullfinch

1

1
Chaffinch
1


1
Coal Tit
1


1
Dunnock

3

3
Firecrest

1

1
G S Woodpecker
2


2
Goldcrest

2

2
Great Tit
52
8

60
Hawfinch
1


1
Marsh Tit
5
4

9
Nuthatch
5


5
Pied Flycatcher
6
4
29
39
Redstart
2
3
3
8
Robin
5
6

11
Short T Treecreeper
1
1

2
Song Thrush
2
1

3
Spotted Flycatcher
1


1
Wren
1
3

4
Total
109
57
38
204

Our ringing results for June were very pleasing at several levels.  Usually a good summer ringing session yields fifteen birds; not this year where the totals are notably up and illustrate the value of long term ringing and monitoring.  A key aim of a constant ringing effort is to elucidate and evaluate population patterns and trends which are not always obvious from a single, or a few years’ data. The satisfying components of June’s ringing were:
Redstart:
-          A male’s hip-po-po was frequently heard in early May.  A female with a brood patch 3 was caught in early June and observed using a Nuthatch nest box where she was brooding four eggs.
-          All four eggs hatched and three pulli were ringed.
-          The three ringed pulli fledged.
-          At ringing the nest box contained a leathery, dessicated chick; cause of death unknown.
-          Previously Redstart have been heard in spring and a couple captured on Autumn passage.
-          This was the first breeding record for Meisen Wood; hopefully some nest site fidelity will develop if the adults and young survive.

Redstart chick 

Pied Flycatcher:
-          The 29 pulli ringed brings the total for 2018 to 39 pulli ringed which is the best total to date; as was 12 occupied nest boxes.
-          More pulli would have been ringed if we had not been on holiday in England.
-          These figures indicate a continuing upward trend since the project started in 2015.
-          This positive trend is possibly a consequence of our nest-box saturation policy combined with adults and several of the offspring demonstrating nest site fidelity; several re-traps were adults and fledglings from previous years.
-          Of note is the fact that upon fledging the youngsters and adults immediately depart.  This differs from literature citations for other parts Germany were they are reported to stay in the vicinity for up to two weeks post fledging.
-          Three nests were definitely of secondary females which had normal sized clutches but had low fledging success – 2, 2, and 3; the females struggled to feed the young. Also these fledglings were smaller and lighter than those of the primary females.

Great Tit and Blue Tit
-          Good numbers for both species, particularly after last year’s poor breeding season.
-          Forty-seven of the fifty-two new Great Tits were this year’s birds and six of the retraps were pulli ringed earlier.
-          Similar proportions apply to the Blue Tit data.

The new ringed figures for Robin, Blackbird and Song Thrush were all juveniles but these numbers are below average.  These species all started breeding later than normal so, possibly, July’s figures will show an upward correction.

The number of nest boxes occupied was the highest yet.  Two of the failures were assumed failures as the nest box entrances were surrounded by legions of fleas which deterred our inspection effort.

Box Condition
Numbers
Empty
36
Birds
37
Wasps
7
Failed
3
Total
83

Other observations for Meisen Wood this May were:
-          a female Goshawk was seen twice flying over the meadow carrying prey which looked like Jackdaw.  Nest not found but they are known to breed in the area and their display flights were witnessed in late March.
-          a substantial increase in the number of bees visiting the meadow, at last.
-          fourteen species of butterfly were recorded on various meadow plants.
-          at the end of the month on most evenings hummingbird moths were observed visiting various flowers.

And by months’ end the crickets had attained their adult form and their stridulations had become one of those pleasing summer sounds.


Redstart female

Redstart male

Thursday, 19 July 2018

Wendover CES 8 - 17th July 2018


 560ft nets (standard CES pattern), nets open from 04:04 to 10:04.
Calm, dry, clear sky.


Species
Total
New Bird
Retrap
Blackbird
5
2 (2 x 3J)
3
Blackcap
4
3 (1 x 3J)
1 (1 x 3J)
Blue Tit
1

1
Bullfinch
2
1 (1 x 3J)
1
Chaffinch
1
1

Chiffchaff
4
4 (4 x 3J)

Dunnock
4
2 (2 x 3J)
2
Goldcrest
1
1

Robin
7
1 (1 x 3J)
6 (6 x 3J)
Song Thrush
3
3 (2 x 3J)

Treecreeper
1
1 (1 x 3J)

Wren
3
2 (2 x 3J)
1 (1 x 3J)
Total
36
21
15

A lower than average catch for CES#8 (mean 43) but about par for this year.  A steady influx of various 3Js, with a Treecreeper being the bird-of-the-day.  Adam carefully released a bat from Ride 1 on the first round – species under investigation.  Lottis are proving elusive this year despite the passage of a number of flocks in recent sessions.

Pete