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  1. Speciation in the genus Ochthoeca (Aves: Tyrannidae)
    By: Fitzpatrick, J W
    Type: Article
    In: Breviora.
    Volume: 402
    Date: 1973
    Page Range: 1--13
    Publication info: Cambridge, Mass. :Museum of Comparative Zoology, Harvard University,[1952-
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  2. Systematics and biogeography of the Tyrannid genus Todirostrum and related genera (Aves)
    By: Fitzpatrick, J W
    Type: Article
    In: Bulletin of the Museum of Comparative Zoology at Harvard College.
    Volume: 147
    Date: 1976
    Page Range: 435--463
    Publication info: Cambridge, Mass. :The Museum,1863-
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  3. Twenty-one bird species or new or little known from the Republic of Colombia
    By: Fitzpatrick, J W - Willard, D E
    Type: Article
    In: Bulletin of the British Ornithologists' Club.
    Volume: 102
    Date: 1982
    Page Range: 153--158
    Publication info: London :British Ornithologists' Club,1893-
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