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From issue:   Issue:   British Wildlife 10.5 June 1999

Predicting the date of frog emergence in Devon

By - Ken Tyson, Roger Smith

The first frog spawn (already one to two days old) of 1999 was seen in a garden pond in Crediton, Devon, on 18th January. Within a few days of this date, Common Frogs Rana temporaria were spawning over a wide area of mid-Devon. The trigger for bringing frogs out of hibernation to return to their breeding ponds to mate and lay spawn is uncertain. Increasing day-length and temperature would be expected to have an influence.

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"British Wildlife is the pulsating heart of the UK nature conservation movement."

Matthew Oates, National Trust

"The most important and informative publication on wildlife of our times"

Michael McCarthy, The Independent

"Packed with readable, thoughtful, up to date articles; written by ecologists and naturalists for ecologists and naturalists"

Nick Baker, Presenter and Naturalist