The “avenue” type consists of two close-set parallel walls of sticks, interwoven and sometimes overarching, on a circular mat of twigs. Avenues are made by the satin bowerbird (Ptilonorhynchus violaceus); the regent bowerbird (Sericulus chrysocephalus) and its relatives; and the spotted bowerbird (Chlamydera maculata) and its…
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