At 08.21 GMT on 13th October 1989, in the Valle del Palmar (Buenavista), northwestern Tenerife, Canary Islands, I saw a male Eurasian Sparrowhawk Accipiter nisus and a female Common Kestrel Falco tinnunculus perched less than 40 cm apart on two adjacent branches of an American Aloe Agave americana. During about 30 seconds' observation through a 420-mm tele-lens from a hide 17 m away, the sparrowhaw


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