Abstract

ABSTRACT Philohydor lictor is a Neotropical tyrant flycatcher that belongs to a kiskadee-like mimetic system. This system encompasses seven genera with at least one species with strikingly similar plumage patterns, in which smaller species mimic larger species to deceive predators. The reproduction of P. lictor is poorly known, and misidentification of its nests and eggs with other species with similar plumage may be common, creating confusion between them. Here, we aim to summarise the knowledge about its reproductive biology and highlight the common pitfalls in gathering information on mimetic species in citizen science, literature, and museum databases. We assembled 106 reproductive records from between 1898 and 2023, of which 49 were from citizen science, 37 were from the literature, and 20 were from museum egg collections. Most reproductive records were from Panama (31.3%, N = 26) and Brazil (25.3%, N = 21). Egg-laying mainly occurred in the first half of the year and peaked when monthly total precipitation was between 150 and 300 mm (40%, N = 16). Nests were loose cups placed on vegetation near water and built with dry twigs, roots, and tendrils lined with fine twigs. Eggs from museum collections measured 20.9 × 16.1 mm (N = 23). Misidentified records comprised 21.7% (N = 23) of total breeding records and mainly occurred in <1935 museum egg collections. Misidentifications included records of domed nests, eggs larger than expected for the species’ body size, and records from outside the species’ range. These results stress that studies of reproductive biology of mimetic species based on citizen science, literature, and museum datasets are not straightforward, and data should be refined by validation procedures. These validations should include verification that records fall inside the species’ geographic range, include correct description of nests, and match egg size with adult body size.

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