Distributional Survey of the Bird-Voiced Treefrog, Hyla avivoca (Anura: Hylidae), in Arkansas

A field study of the bird-voiced treefrog, Hyla avivoca, was conducted in Arkansas during the summer of 1991. A total of 75 separate sites in 23 counties was visited. Males with their distinctive whistle-like calls were listened for at night at each site. Breeding colonies of Hyla avivoca were found in four of the six major river basins; the study established three new county records. Currently, this species has been documented at 14 sites in 10 counties; in very few situations were the treefrogs locally abundant (voucher specimens deposited in the Arkansas State University Museum of Zoology). Habitat perturbation and reduction by man within the available wetland habitats have undoubtedly contributed to the extirpation of this species from many potentially-favorable aquatic ecosystems