This was the second year that the pair have used the nesting box. The pair was very active in March and April. The female was using the nest box and the male was catching food and shareing it with the female and I asuume that she was sitting on eggs. The male was protecting the nest site against Ravens and a coopers hawk. The pair had five fledgings last year and they emerged first week of June. All the activity came to an end about four days ago (27 April) The Kestrals have disapered no sight of either one and no activity with the nest box. Does anyone know what might have happened ? Did a predator maybe destoy the eggs? If so would the Kestrals then abandon the nest box and leave the site? If the male was killed will the female remain in the box ??? This is really mysterious !! Anyone have any ideas what might have happend ?The Nest box is mounted in a Joshua tree about 30 ft up.