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Spring 2007 Report

29/05/2007

Biology.ie recordings of Spring sightings show that events either took place early, or just on time. The construction of the new

Nature's Calendar project on www. Biology.ie meant we had to leave some data on the old maps behind. However we can report the following summary of some events that occurred this Spring.
Hawthorn flowering took place nearly 3 weeks earlier than most other years.
The Horse Chestnut leaf budding started about 1 week earlier than usual, but seemed to slow dramatically until the normal leaf burst time approached and then leaf burst occurred fully.
The Ash tree leaves opened just on time. The Ash is one of our last trees to produce its leaves and one of the first to lose them in Autumn ( Autumn Watch starts this year on Biology.ie ). The Ash saplings tend to open earlier than the mature tree and some of these were entered as sightings. Try and report using trees that are about 25 to 30 years old.
The warm April brought out the Peacock butterfly up to 30 days early. We also had reports of Hummingbird Hawkmoths in April, probably the result of overwinter hibernation.
The seven spotted ladybirds were a little early also. Sighting came in up to 10 days earlier than usual. The warmth brought out the insects early.
Few frogspawn sightings were reported, but those than came in were all early sightings- perhaps about 12 to 15 days early.
Not counting the scouts, the swallows arrived just on time.
So well done to everyone who reported.
Remember there were earlier sightings of many events, but these tend to be isolated and occur in many years. The results above are a summary of the average trend that these events show.

Photograph shows the Ash in leafburst on May 22nd, 2007. © Paul Whelan.