As promised, how is the phenology looking against a backdrop of a very wet but reasonably mild Winter. One notable thing for me were the number of Thunder days, four in total, all of which occurred before the 16th January. This is quite exceptional under any circumstances and as a consequence there is a notable shift towards earlier day numbers.
Now onto the flowering plant and shrub species. The flowering plant species witnessed for the first time in Winter were Woodland Snowdrop, Winter Aconite, Daffodil (cultivated type), Primrose and Lesser Celandine. The flowering shrub species were the Hazel with its catkins and the Blackthorn in blossom.
Several of the above events are generally regarded as not suitable for accurate phenological tracking by certain well-known naturalists, can you guess which ones?
Two insect species were seen on the wing for the first time before the end of February and these were the first Bumblebee, presumably of the genus bombus terrestris as well as Brimstonebutterfly. Below are the respective day numbers and rolling averages over a succession of years for those seasonal treats.
There were some other bird related sightings occurring for the first time this year, some of which will be apparent when looking at MY NATURAL EVENTS CALENDAR. I hope to blog about these over at ukbirdingtimeline soon, in the meanwhile, I will leave you to ponder any determinable trends in the data alongside some images of the above phenomena.
Click on the following underlined links in the blue text for other folk’s images of Primrose and Lesser Celandine in this previous posting.
Best Wishes and more updates soon
*the warmer start to March has accelerated some events yet further, keep watch on the events calendar for updates
Fellow bloggers, here is an overdue update of my findings from the final winter month of February2013. As you can see, at least in my patch, it ended up both on the cold and slightly dry side.
When looking back at February 2012 it did not differ that greatly. A Temperature mean of -1.0c below normal was less cold than this time around, which registered -1.8c below the 30 year mean. In fact, the main difference climatically speaking, was the ongoing drought which faced many last February. My statistics for February 2012showed a precipitation deficit of 36.9mm, whereas the deficit this time around was only 11.7mm. Away from the statistics, there were still some stirrings coming from the Natural World.
Daffodils were first witnessed in bloom on 7th February, whilst in 2012 it was to be the 2nd January. *It is just possible that this sighting may have been slightly off target, due to your resident blogger suffering from a bout of flu. The ongoing trend given off by sightings of first flowering dates for Daffodil is represented below. However, it is the truly wild variant (Narcissus pseudonarcissus) which comes into bloom later and provides us with a more reliable phenological indicator.
Next up was my first sighting of a Yellowhammer (Emberiza citrinella) back in its breeding area, coming on the 13th February. This once again provides us with an area of debate, as to how easily you can readily interpret the bird’s return as a correlated to its willingness to breed. Moreover, the data does tend to show a short timeframe between its arrival back in its breeding territory and the more significant activity of the bird’s actual first seasonal song. As before, the ongoing data range is provided below.
Just three days later on the 16th FebruaryI was to hear a first drumming Woodpecker species. The candidate we are tracking here in the United Kingdom is the Great-Spotted Woodpecker (Dendrocopos major), a personal sound recording of which can be accessed by the following the link below.
The 17th February went on to produce two phenological firsts by way of locally flowering Blackthorn (Prunus spinosa), a week earlier than last year’s date of the 24th February. Also, well ahead of 2012 was the first leafing of Hawthorn (Crataegus). Unbelievably, in spite of a colder February this year and a rather ferocious March which followed, last year’s 5th Marchconfirmation of first leafing of Hawthorn was very late in comparison.
For information purposes, you can view the ongoing trend in these two aforementioned phenomena below.
Looking back at January 2013, were my local climatic conditions much different to that of 2012?
Firstly, in the United Kingdom, 2012 began as “the year of the drought” * with recorded precipitation totalling 32.8mm in my neck of the woods. By comparison, January this time around looked like this.
In total, we received 61.6mm, which is still below the revised 1981 to 2010 mean by approximately 25% or so. What about the Air Temperatures?
January 2012 was mild in comparison with some 11 double-digit Fahrenheit Maximums being achieved back then and unsurprisingly a mean of 0.8cabove the long-term average, mentioned previously. This time around, January2013 saw the following daily Air temperature trend.
Due to almost two-thirds of January 2013 being in the cold to very cold category, it is unsurprising that the mean return of 4.0c was below the long-term average by 0.6c. As a result of the above, can you guess which phenological indicators were to show themselves amidst the cold of January?
The first Primroses (Primula vulgaris) were witnessed in bloom on 5th January. However, before we jump for joy at seeing them so early in the year, one should perhaps, read an excerpt from Richard Mabey‘s wonderful Flora Britannica. In there, Richard states that they are not the most reliable of indicators when it comes to tracking climate change. Oh well! They are however, beautiful to see and always brighten up a dull day.
An early songster is always nice to hear and one of the first to embrace the New Year was the Blackbird (Turdus Merula). I first heard the 2013 song of this particular species on 7th January, whereas last year it was 9th January. A personal sound recording of a Blackbird can be heard below. This link will take you to another website, which upon opening, you should click the orange icon on the Left Hand side of your screen to allow playback of the sound recording.
The next phenology indicator of interest came courtesy of First Hazel Flowering (Corylus avellana) on 11th January. This compares favourably with the 7th Januarysighting from the previous year. A record shot of which, I have attached below.
The final phenologically related event of any consequence came about on the 21st January. This revealed itself in the form of a Chaffinch (Fringilla coelebs) first heard singing. The corresponding date last year was the 13th January. A personal sound recording of a Chaffinch singing is available via the link shown below.
A final way to view the ongoing trend in my datasets is to observe them in graphical format. Good news!
Represented below are the aforementioned sightings in such a manner. Please note each event recorded annually is represented as a day number and not in date format. The events have been logged, only during years, in which I managed to achieve a meaningful result. Please make what you will of the data.
Given the cold conditions of January and the fact that I have often been preoccupied in my personal life, things have been rather slow to unfold. February was to prove a different story.
* The year of ongoing drought quickly became the year it never stopped raining, officially 2nd wettest in Met Office recorded history.