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• Urban kestrels in Rotterdam: three years of rooftop watching 2026-04-18 · observation · urban The breeding pair on the old grain elevator has been there every spring since 2023. This year they raised five chicks — the most I've counted from that nest box.
• Sigma 150-600mm DG DN Sport: nine months with the polder lens 2026-02-11 · gear · review I bought this lens specifically for hovering kestrels over open fields. Autofocus on a bird hanging still in a headwind is a particular kind of test.
• Flevoland in January: short days and a lot of voles 2025-12-29 · observation · seasonal Kestrels need voles, and Flevoland's agricultural polder is reliably good in winter when the fields are bare.
• Nest box season 2025: what worked and what didn't 2025-07-14 · nest-watch · field-notes Four nest boxes monitored this season. Two successful broods, one abandoned, one occupied by stock doves.