Wednesday 25 May 2016
Mute Swan Update
The mute swan family have now left the nest, but unfortunately there is only a single chick that has hatched from the seven eggs that were laid.
25 May 2016
Contrary to earlier weather forecasts, Sunday was actually a nice day and I was able to get down to the patch to complete a butterfly transect, which was fairly uneventful with a couple of holly blues, a small white, large white, a couple of orange-tips and a few green-veined whites. A lone peacock butterfly was also noted outside of the transect.
I had a few more firsts for the year with the first flowering foxglove, scarlet pimpernel, red clover and star-of-Bethlehem. The first swollen-thighed beetles were seen sitting in the buttercups and a blue-tailed damselfly was seen at Reffley Reservoir.
A bit of excitement was had when a good candidate for garden warbler was heard on Osier Marsh. These shy birds sound very similar to a blackcap and like to hide in deep cover. I always think they sound a bit more 'flutey' than a blackcap and won't record them unless I have actually seen them to confirm their ID. And it was finally confirmed when it was eventually glimpsed for a brief moment as it moved between the deep cover.
I still haven't seen any dragonflies yet, but the damselfly numbers are building quite nicely on Reffley Reservoir. A count of 76 large red damselfies were noted, with 36 pairs actively mating. Thirty four azure damselflies were also counted, with 5 pairs mating and a single pair were actually ovipositing (laying eggs) in the vegetation.
I spent all day Monday identifying three new species found the day before. The first was quite easy and was a day flying moth called mother shipton. Apparently, it is named after an olde worlde Yorkshire witch who wore clothes of a similar pattern to the moth! The second two took much more time and I had to wait for one to be confirmed from an expert on line.
A hoverfly was found as I was returning from the butterfly transect. I had first thought it was a wasp and stopped to check which species it was. On a closer inspection, it was clear this was one of the hoverfly 'wasp mimics', so I netted it for a closer inspection. When I tried to ID it, my guide gleefully informed me that it was one of the 'Difficult Five' and so it proved to be. Having gone around in circles for a few hours I decided to take some photo's of the important features and put it on a Facebook group that has some of the top hoverfly experts on it. I got my ID a few hours later from no one less than the actual author of the guide book I was using!
The third species I had found was another bee and I spent the vast bulk of Monday trying to sort it out. I could get as far as that it was one of the mason bees, but I couldn't pin down which species. I kept ending up at some really rare species that don't occur anywhere close to Norfolk and the ones that it was most likely to be didn't have the correct features of my bee. I was using the ID keys, but still couldn't get the right species and couldn't work out where I was going wrong, so tried some radically different choices in my selections, but still couldn't get anything close to what I had.
When you are not used to identifying a certain group of insects, it can be difficult to interpret what some of the id features are. Because of this, I spent most of Monday getting nowhere fast and it wasn't until mid-evening that I had my inspiration. I found the part where I was interpreting differently and this led straight to the correct species - a red-vented mason bee. As soon as I looked at the page I knew I had the correct one at long last. Even though I finally managed to get there, I still have to disagree with the part of the key I had to interpret differently!
I had a few more firsts for the year with the first flowering foxglove, scarlet pimpernel, red clover and star-of-Bethlehem. The first swollen-thighed beetles were seen sitting in the buttercups and a blue-tailed damselfly was seen at Reffley Reservoir.
A bit of excitement was had when a good candidate for garden warbler was heard on Osier Marsh. These shy birds sound very similar to a blackcap and like to hide in deep cover. I always think they sound a bit more 'flutey' than a blackcap and won't record them unless I have actually seen them to confirm their ID. And it was finally confirmed when it was eventually glimpsed for a brief moment as it moved between the deep cover.
I still haven't seen any dragonflies yet, but the damselfly numbers are building quite nicely on Reffley Reservoir. A count of 76 large red damselfies were noted, with 36 pairs actively mating. Thirty four azure damselflies were also counted, with 5 pairs mating and a single pair were actually ovipositing (laying eggs) in the vegetation.
I spent all day Monday identifying three new species found the day before. The first was quite easy and was a day flying moth called mother shipton. Apparently, it is named after an olde worlde Yorkshire witch who wore clothes of a similar pattern to the moth! The second two took much more time and I had to wait for one to be confirmed from an expert on line.
 |
| mother shipton moth. |
A hoverfly was found as I was returning from the butterfly transect. I had first thought it was a wasp and stopped to check which species it was. On a closer inspection, it was clear this was one of the hoverfly 'wasp mimics', so I netted it for a closer inspection. When I tried to ID it, my guide gleefully informed me that it was one of the 'Difficult Five' and so it proved to be. Having gone around in circles for a few hours I decided to take some photo's of the important features and put it on a Facebook group that has some of the top hoverfly experts on it. I got my ID a few hours later from no one less than the actual author of the guide book I was using!
 |
| Chrysotoxum cautum |
 |
| measuring the lengths of the antenna segments |
 |
| Judging the size of the genital capsual |
The third species I had found was another bee and I spent the vast bulk of Monday trying to sort it out. I could get as far as that it was one of the mason bees, but I couldn't pin down which species. I kept ending up at some really rare species that don't occur anywhere close to Norfolk and the ones that it was most likely to be didn't have the correct features of my bee. I was using the ID keys, but still couldn't get the right species and couldn't work out where I was going wrong, so tried some radically different choices in my selections, but still couldn't get anything close to what I had.
When you are not used to identifying a certain group of insects, it can be difficult to interpret what some of the id features are. Because of this, I spent most of Monday getting nowhere fast and it wasn't until mid-evening that I had my inspiration. I found the part where I was interpreting differently and this led straight to the correct species - a red-vented mason bee. As soon as I looked at the page I knew I had the correct one at long last. Even though I finally managed to get there, I still have to disagree with the part of the key I had to interpret differently!
Saturday 21 May 2016
16th - 21st May 2016
The last time that I updated the list of all species that have been recorded for my patch, it stood at around 450 species. I was reminded recently that I had arrived at the 500 species in the middle of June 2015 and that I have added an average of 10 species a month when I reached 600 species. I have updated the list since that conversation and the Patch List Total now stands at 634, with a month still to go until the 500 anniversary. This now makes my average additions to the Patch List to just over 12 a month.
The fact that I finally got my moth trap working has given me the greatest number of additions. I bought the trap in 2013, but it had stopped working by the third time of use. I had tried a new light bulb and then a new battery, but neither of these worked. In the end, I decided that I had damaged the electrics when I accidentally attached the battery leads the wrong way round and so had to wait until 2015 and could afford to buy new electronics. This worked a treat and I managed to get the trap out on 5 occasions through the year.
Since 2014, I have been busy trying to identify hoverflies, which have probably been the second biggest number of species to be added to the overall list. A good fungi season provided another batch of new records and a small number of spiders have also been added. The end of last year saw the first publication of a book to ID bees for over a hundred years, and I have been eagerly been using it since march, adding a good number of bees.
This week has been the first week of a fortnights holiday and the weather has been relatively kind, enabling surveys to be undertaken each day bar the wet and windy Wednesday. I have even been able to find the time to buckle down to surveying the grasses and sedges of the area and have added a small number of these to the list. I have also added further numbers of bees and some more hoverflies.
In addition to the glut of new species, there have also been plenty of first for the year this week. This includes the first flowering cock's-foot grass and large-leaved timothy grass, the first cardinal beetle and small yellow underwing moth, the first fledged hedge accentors, the first Cercopis vulnerata, sand martin, flowering yellow iris, tree bumblebee worker, early bumblebee and flowering bird's-foot trefoil.
The mute swan nest that is on the Reffley Reservoir has seen some drama this week. I noticed the swan that had been sitting when I had passed by earlier was now standing to one side of the nest. Expecting to see one of the eggs hatching, I stopped to have a closer look through my binoculars. I could only see four of the seven eggs that I know are there, but I could also see something just to one side of the eggs. It was too dark to be a chick and I couldn't work out what it was. It didn't help that it wasn't moving and I struggled to work out what it actually was. Then, all of a sudden, I was shocked to realise what it was - an adder!
Up until this moment, I never knew that adders do occasionally swim. There was no other way it could have got into the nest, which is a good distance from the edge of the reservoir and any kind of dry passage. I have no idea why the adder was there and can only assume it was looking for chicks. A mute swan egg is surely to big for an adder to tackle? I was unable to stay and watch what would happen next, but the snake had gone and the swan was back sitting on the eggs the next day.
On Friday 20th, I noticed that both swans were now on the nest and that the sitting bird was fidgeting a lot. So I sat down to pour myself of cup of tea and wait to see I could confirm my suspicions. It wasn't very long before I had my answer when the swan stood up and I could see a newly hatched chick that was still wet from the egg.
The fact that I finally got my moth trap working has given me the greatest number of additions. I bought the trap in 2013, but it had stopped working by the third time of use. I had tried a new light bulb and then a new battery, but neither of these worked. In the end, I decided that I had damaged the electrics when I accidentally attached the battery leads the wrong way round and so had to wait until 2015 and could afford to buy new electronics. This worked a treat and I managed to get the trap out on 5 occasions through the year.
Since 2014, I have been busy trying to identify hoverflies, which have probably been the second biggest number of species to be added to the overall list. A good fungi season provided another batch of new records and a small number of spiders have also been added. The end of last year saw the first publication of a book to ID bees for over a hundred years, and I have been eagerly been using it since march, adding a good number of bees.
This week has been the first week of a fortnights holiday and the weather has been relatively kind, enabling surveys to be undertaken each day bar the wet and windy Wednesday. I have even been able to find the time to buckle down to surveying the grasses and sedges of the area and have added a small number of these to the list. I have also added further numbers of bees and some more hoverflies.
In addition to the glut of new species, there have also been plenty of first for the year this week. This includes the first flowering cock's-foot grass and large-leaved timothy grass, the first cardinal beetle and small yellow underwing moth, the first fledged hedge accentors, the first Cercopis vulnerata, sand martin, flowering yellow iris, tree bumblebee worker, early bumblebee and flowering bird's-foot trefoil.
The mute swan nest that is on the Reffley Reservoir has seen some drama this week. I noticed the swan that had been sitting when I had passed by earlier was now standing to one side of the nest. Expecting to see one of the eggs hatching, I stopped to have a closer look through my binoculars. I could only see four of the seven eggs that I know are there, but I could also see something just to one side of the eggs. It was too dark to be a chick and I couldn't work out what it was. It didn't help that it wasn't moving and I struggled to work out what it actually was. Then, all of a sudden, I was shocked to realise what it was - an adder!
Up until this moment, I never knew that adders do occasionally swim. There was no other way it could have got into the nest, which is a good distance from the edge of the reservoir and any kind of dry passage. I have no idea why the adder was there and can only assume it was looking for chicks. A mute swan egg is surely to big for an adder to tackle? I was unable to stay and watch what would happen next, but the snake had gone and the swan was back sitting on the eggs the next day.
On Friday 20th, I noticed that both swans were now on the nest and that the sitting bird was fidgeting a lot. So I sat down to pour myself of cup of tea and wait to see I could confirm my suspicions. It wasn't very long before I had my answer when the swan stood up and I could see a newly hatched chick that was still wet from the egg.
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| mute swans just before the newly hatched chick was revealed. |
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| Brimstone moth. A new species for the patch. |
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| Mallard with chicks. |
Sunday 15 May 2016
Thursday 12 May 2016
The weather was much better than had been forecast and the sun was shining brightly in what was supposed to be an overcast day. It would have been a hot day, but the wind kept the temperature to being pleasantly warm. A butterfly transect was completed earlier in the week, so that left the day open for some hoverfly hunting and maybe a bee or two.
The day got off to a good start with the first flowering greater celandine, germander speedwell and cow parsley for the year, along with the first marmalade hoverfly for the season down between the hospital and Springwood. Further down the track a second hoverfly was caught in the sweep net which turned out to be a male Leucozona lucorum - a first for the patch.
This years first Meridon equestris and Sphaerophoria scripta were caught on Osier Marsh. S scripta is very similar to several different species of hoverfly. All have similar markings which can vary depending on temperatures during development and the only way to confirm ID is to examine the male genetalia. Luckily, a male was caught and I was able to examine the shape and form of the genitals for the first time to confirm the species. Females can not be separated.
It has been wonderful to hear a cuckoo on a number of visits this year. It was first noted calling on 30th April and has been heard calling regularly since. This is one of the most iconic sounds of spring and any day spent in the countryside on a warm and sunny day with the cuckoo calling has to be one of life's greatest moments. This was sadly lacking in 2015 when there were only two records with a singing male heard on the 9th and 10th May!
I successfully ran an actinic moth trap on a small number of occasions in 2015 and had already recorded poplar hawkmoth, but I was stunned to come across a mating pair in the long grass next to the cycle path. They were quite exposed and it is surprising that they hadn't been spotted by any predator. I have been recording wildlife for thirty years now, and I have never seen anything like this before!
A visit to Reffley Wood proved extremely productive and I managed to add a further 4 new species for the patch and another first for the year. A medium sized black hoverfly was netted just after entering the wood and ID'd as Cheilosia albitarsis. A little further along another hoverfly was spotted, but proved elusive and it wasn't until I was coming back out of the wood later that I managed to net it. A quick examination of it proved it was a species that I have wanted to see ever since I started to get interested in hoverflies a couple of years ago - Rhingia campestris. This is quite an easy one to ID due to its great big long 'beak' protruding from the front of its face!
There is a sandy track that runs through the north-eastern edge of Reffley Wood. A bench is situated almost at the end of the track where I have spent many times watching a group of small bees busily buzzing about at this time of year. I had always suspected that they were some kind of mining bee and it wasn't until today that I have been able to get an ID on them. They are quite tricky to pin down and I can only say that this is a tentative ID until I can get them determined by someone much more experienced. But as far as I can tell, they are the sandpit mining bee Andrena barbilabris.
The day got off to a good start with the first flowering greater celandine, germander speedwell and cow parsley for the year, along with the first marmalade hoverfly for the season down between the hospital and Springwood. Further down the track a second hoverfly was caught in the sweep net which turned out to be a male Leucozona lucorum - a first for the patch.
This years first Meridon equestris and Sphaerophoria scripta were caught on Osier Marsh. S scripta is very similar to several different species of hoverfly. All have similar markings which can vary depending on temperatures during development and the only way to confirm ID is to examine the male genetalia. Luckily, a male was caught and I was able to examine the shape and form of the genitals for the first time to confirm the species. Females can not be separated.
It has been wonderful to hear a cuckoo on a number of visits this year. It was first noted calling on 30th April and has been heard calling regularly since. This is one of the most iconic sounds of spring and any day spent in the countryside on a warm and sunny day with the cuckoo calling has to be one of life's greatest moments. This was sadly lacking in 2015 when there were only two records with a singing male heard on the 9th and 10th May!
I successfully ran an actinic moth trap on a small number of occasions in 2015 and had already recorded poplar hawkmoth, but I was stunned to come across a mating pair in the long grass next to the cycle path. They were quite exposed and it is surprising that they hadn't been spotted by any predator. I have been recording wildlife for thirty years now, and I have never seen anything like this before!
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| Mating poplar hawkmoths |
A visit to Reffley Wood proved extremely productive and I managed to add a further 4 new species for the patch and another first for the year. A medium sized black hoverfly was netted just after entering the wood and ID'd as Cheilosia albitarsis. A little further along another hoverfly was spotted, but proved elusive and it wasn't until I was coming back out of the wood later that I managed to net it. A quick examination of it proved it was a species that I have wanted to see ever since I started to get interested in hoverflies a couple of years ago - Rhingia campestris. This is quite an easy one to ID due to its great big long 'beak' protruding from the front of its face!
 |
| Rhingia campestris |
There is a sandy track that runs through the north-eastern edge of Reffley Wood. A bench is situated almost at the end of the track where I have spent many times watching a group of small bees busily buzzing about at this time of year. I had always suspected that they were some kind of mining bee and it wasn't until today that I have been able to get an ID on them. They are quite tricky to pin down and I can only say that this is a tentative ID until I can get them determined by someone much more experienced. But as far as I can tell, they are the sandpit mining bee Andrena barbilabris.
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| Female head and thorax |
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| Female abdomen |
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| Male |
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