FRIENDS

                   OF

           BRIERDENE

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Species Information

This page will contain photos and information on all the New Species.


If we run out of new species we will use this page to display information on some of the species found in the Dene.





Total Number of Recorded Species in the Brierdene  31/10/2018

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 Groups  Number
 Arachnids
  36
  Bats    3
  Birds
   125
  Bugs & Beatles    51
    Bumblebees - Bees - Solitary Bees    15
Butterflies    21
   Centipedes    1
Crustaceans    5
   Dragonflies    6
Fish and Amphibians    5
  Flies    51
  Fungi    39
Harvestman    2
  Ladybirds    8
Mammals    10
  Molluscs    9
Lichen, Liverworts Mosses and Slime
Moulds
   121
  Moths & Miners   165
  Plants, Bushes & Trees    323
  Reptiles     1
  Wasps    9
 Worms    11
   


                           

Do Robins migrate



European robins (Erithacus rubecula) live throughout Europe (except in the far north), Russia and western Siberia. British and Irish robins are largely sedentary, and most do not move more than 5km. Those that do are usually adult males moving between their breeding and winter territories.


However, some UK robins, mostly females, will cross the Channel to spend their winters in warmer climes, in some cases as far south as southern Spain and Portugal. Continental birds also pass through on the east coast of the UK on passage further south.


At the same time, our resident birds are joined by immigrants from Scandinavia, continental Europe and Russia, which come to the UK to avoid the severe winters there. These visiting birds are generally paler in colour and are less 'tame' than UK birds. This is likely to be because in their home countries they are woodland birds and have less contact with humans.


Much research has been carried out into the lives of robins and it has revealed that they are one of the few UK species that sing all year round. Both males and females sing to declare and defend their own individual territories outside the breeding season, and their songs are more or less identical.


Around Christmas-time, robins begin to explore other robins' territories in the hope of finding a mate. The majority will have paired up by mid-January and the females will stop their territorial singing. However, the males will continue to sing to declare the 'ownership' of what has now become a joint future breeding territory; one which they will fight to the death to defend - in some populations, up to 10% of adult mortality is accounted for by territorial disputes.


On occasions, robins will sing long into the night, especially in urban areas where there are streetlights. They are often the earliest birds to start the dawn chorus and one of the last to stop in the evening.



                                                                     The above was taken from the R.S.P.B. Website

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