In response the wardens replaced the trees with a variety of eight British trees - four rowans, two whitebeams
and two Midland hawthorns - all of which blossom in spring and provide berries in autumn.
Some of the sites were so inaccessible that tree climbers had to assist, as non-native trees and scrub were felled to give more light to the whitebeams
, allowing them to flower and fruit.
(Sorbus aria lutescens) unfold their pleated silvery green leaves and the first of the birch leaves are starting to emerge.
"Thousands will visit the laburnums of Bodnant this spring, but hardly anyone will ever have heard of the whitebeams
on the crags of the Eglwyseg Valley above Llangollen.
"It is a very complex picture but we think that the Arran whitebeams
are gradually evolving towards a new type of tree which will probably look very similar to a rowan."
Trees that withstand salty breezes include mountain ash, whitebeams
The authors are Douglas-Westwood Limited, Whitebeams
, Pett Bottom, Canterbury, CT4 6EH, UK.
Don't scoff at the cheap and cheerfuls - cotoneasters, rowans, whitebeams
and crab apples.
Mountain ashes and whitebeams
are also trees for all seasons, with white flowers in the spring, red, orange, yellow or white berries in the autumn along with brilliant leaf colour.
(A few minutes' walk from the city centre, the site is a step down the towpath from the town railway station and is served by plenty of buses.) Urban fashion, car-parking lines the boulevards under the trees and doubtless will become less obtrusive as the whitebeams
Work to remove and replace the Swedish whitebeams
which form a landmark entrance to Newcastle's Exhibition Park is expected to begin later this month.
Obvious contenders for the title of best bird larder include:- Crataegus monogyna (common hawthorn), Cotoneaster spp., Sorbus spps (rowans and whitebeams
)., Viburnum opulus (guelder rose), Rosa spps., Pyracantha spps., Berberis spps., Prunus spinosa (blackthorn), Prunus laurocerasus (laurel), Lonicera periclymenum (honeysuckle), Sambucus nigra (Elderberry), Amelanchier spps.