Bohemian Waxwing, Bristol |
The UK is currently experiencing an invasion of Waxwings.
These starling-sized birds originate in Scandinavia and Siberia where they
breed, but travel to the UK in the winter to feed on berries. Usually they mostly
stay in Scotland and eastern England, but this year the flocks have spread much
further to the southwest and are now found in the Bristol area close to where I
live.
Rowan berries are a major draw for Waxwings |
The birds photographed were in the car park of Bradley Stoke
shopping centre. They were alternating between staying in the tall trees
overlooking the car wash and flying down to feed on the Rowan berries in the
trees that are planted between the parking spaces. Waxwings are often very
tolerant of close approach as they are not used to being threatened by people
in the remote forests where they spend most of their lives.
Japanese Waxwing |
There are actually three species of Waxwing. The ones now
visiting us are called Bohemian Waxwings (Bombycilla garulus), and their range extends across
Eurasia to north west North America. In the Russian Far East a much more
localised species, the Japanese Waxwing B.japonica is classed as Near Threatened as a
result of deforestation and bird trapping. In North America the third species,
the Cedar Waxwing B.cedrorum, is widespread and in winter they move south from their
Canadian breeding grounds into the US and sometimes as far as northern South
America. The two widespread species are both classed as Least Concern by the IUCN.
Cedar Waxwing |
Waxwings are extreme specialists in fruit, which they consume
almost entirely as soon as the first species ripen in summer through autumn and
winter. In spring they switch to buds, flowers and sap. Especially when nesting
they also take many insects, either by fly catching or gleaning through
foliage.
Bohemian Waxwing nest |
A fairly typical cup-shaped nest is built on a branch fairly
close to the trunk, and several pairs may nest fairly close to each other. Up
to 7 eggs are incubated solely by the female for 14 days, and fledging takes
another 14, with both parents feeding the young. Once the young have fledged
they become nomadic, and can appear well out of the breeding range as they roam
in search of fresh berry supplies, which is why they appeared in a busy car
park in Bristol.
(Bohemian waxwings photographed by me, other images from Wikipedia)
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