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The top documents tagged [migration birds]
20110228.sun yangbo
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POSSIBLE FUNCTIONS of the CIRCADIAN CLOCK IS IT IMPORTANT AT ALL? YES! POSSIBLE FUNCTIONS DAILY PROGRAMING of PHYSIOLOGY PHOTOPERIODIC REPRODUCTION ANIMAL
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Birds. WADDEN SEA´S BIRDS "BLACK SUN" Birdwatching is a popular activity with some of the best conditions in spring and autumn. Particularly the starling
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POSSIBLE FUNCTIONS of the CIRCADIAN CLOCK
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