Breeding of the peregrine falcon falco peregrinus: Ii. weather, nest quality and the timing of egg laying

Penny D. Olsen, Jerry Olsen

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    Peregrine Falcons near Canberra bred slightly earlier following a dry winter. The laying season was shorter and ended earlier when there were many raindays between June and September. The number of raindays in July and August accounted for 77% of the variation in the length of the laying period. A warm, dry winter was associated with a lengthened laying season. A longer, slightly earlier, laying season resulted in more pairs laying and therefore more young raised by the population. Late-laying pairs were only slightly less successful than early-laying pairs. Pairs with alternative nest(s), or with a well-drained nest, had a longer egg laying season, and more of them laid, than other pairs. Thus, pairs holding a territory with a high quality nest were advantaged over those that were not, because of the direct effect of rain.

    Original languageEnglish
    Pages (from-to)1-5
    Number of pages5
    JournalEmu
    Volume89
    Issue number1
    DOIs
    Publication statusPublished - Mar 1989

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