Initial 2013 Dartford Warbler counts in

1st June 2013

Initial 2013 Dartford Warbler counts in

DARTFORD WARBLERAfter crashing during the severe winter of 2010/11, Dartford Warbler populations seem to be stabilising again on then Commons with this year’s count comprising 22 males and seven pairs, a slight increase in 2012 levels. This species is significantly affected by weather conditions, being adversely impacted by cold winters (especially with prolonged snow cover or frosts) and persistent wet weather (especially during the breeding period when whole broods may be lost).  Conversely their numbers increase during warm, dry summers and dry, mild winters. The cycle of crash and recovery also happened 25 years ago  when the population was decimated after the cold winter of 1977/78 and severe winter of 1978/79. It then took 10 years before Dartford Warblers re-appeared in any numbers. It is hoped that the recovery period will be quicker this time as plenty of habitat is available for occupation as numbers recover. 

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