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728  Hand-Rearing Birds

              Release

            Unless towhees can be reunited with their parents, returning them to the wild too early could be a
            death sentence. Towhees mature slowly and must learn many survival skills before they can thrive
            on their own. For the best chance of survival, towhees should be grouped in a cohort of three to six
            birds that progress through rehabilitation together and are eventually released as a group.
              Pre‐release conditioning may begin by 4 to 6 weeks of age. Prior to release, towhees need at least
            1 to 2 weeks in an aviary to socialize with the other towhees in their release cohort and to practice
            survival skills. For towhees, we recommend a minimum aviary size of 10 × 8 × 8 ft. (3 × 2.4 × 2.4 m)
            for three to four towhees. The bigger the aviary the better, but each facility must balance their lim-
            ited resources to serve all the birds/wildlife in their care. During this phase, it is crucial to provide
            enrichment that approximates their natural environment. Minimize human intrusion to allow
            them to “wild up.” Towhees learn by example, copying the behavior of older towhees; housing
            them with older towhees may speed the learning process.
              When raised in the wild, California Towhees do not disperse far from their natal home. Yet, if we
            return each towhee raised in captivity to its natal home, it is less likely to survive on its own.
            Releasing a cohort of towhees at one of the original rescue sites is generally not a good option
            either because most towhees admitted for care are victims of a roaming domestic cat and/or the
            finder may not have the commitment to provide necessary support during the transition period
            from captivity to independence.
              We rely on our volunteers and staff with towhee‐appropriate habitat for soft‐release sites. To bet-
            ter suit towhees, we developed a special soft‐release enclosure: The Towhee Trailer (Figure 46.5).
            Its  defining  features  include  double  walls  with  plastic  fencing  on  the  outside  of  the  2 × 2 in.
            (3.1 × 3.1 cm) wood frame coupled with fiberglass screen on the inside and a large door on the end


































            Figure 46.5  Towhee-specific soft-release enclosure (“Towhee Trailer”). Source: photo by Dana A. Glei.
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