Page 435 - Hand rearing birds second
P. 435

428  Hand-Rearing Birds

            species in San Diego (Least, Forster’s, Elegant, Royal, and Caspian) nest and roost on beaches.
            Injuries are often caused by predators such as raptors, but coyotes and raccoons often invade beach
            and lagoon nesting sites and cause adults to trample and injure young in their haste to escape.
            Superficial wounds are treated by cleaning, disinfection, and the application of silver sulfadiazine
            cream or other dressings. Large scalp wounds should be surgically repaired for fastest recovery.
            Oil-based ointments are not recommended because they contaminate feathers and allow water to
            penetrate the feathers.



            Orthopedic­Injuries
            Wing and leg fractures may be lightly splinted with appropriate material and Micropore paper tape
            (3M) or a light stretch fabric wrap. Unlike in adult gulls with closed fractures of the humerus,
            downy Western Gull chicks with closed near-midshaft fractures heal well when the wing is splinted
            and wrapped, and they have a good prognosis for being able to fly post-recovery. Tern species with
            wing fractures should be assessed on the basis of post-release flying ability because perfect flight is
            necessary for foraging. See Duerr (2017) for information regarding management of fractures in
            these species.
              Both juvenile gulls and terns with unilateral foot trauma (over half the foot missing) or an
            injured hock, knee, or hip joint may have a poor prognosis, depending on the nature of the
            injury. As the chicks or fledglings grow, increasing weight is borne on the uninjured leg or foot,
            and the healthy limb may develop pododermatitis or joint deformity. Early diagnosis and treat -
            ment of injuries improves outcomes, as these species must be able to run and walk comfortably
            as adults.
              Because  plumage  has  to  be  intact  prior  to  release  for  waterproofing  purposes,  veterinarians
            should be aware that sticky or adhesive wraps directly on feathers are contraindicated in these spe-
            cies. The author prefers using nonadhesive materials such as Vetrap or Coban (3M) in a “figure of
            8” format to wrap wings of larger species of terns and gulls. Small tern species’ wings can be
            wrapped with light Micropore paper tape (3M), or narrow strips of nonadhesive materials. Do not
            damage growing flight feathers with wraps.
              Small tern species are particularly prone to pododermatitis, which starts as reddening and swell-
            ing on the underside of the toes. This may occur when underweight or injured fledglings have to
            be maintained indoors on fabric or paper toweling. Foot lesions are difficult to treat and often
            result in systemic infections and death. Damp and wet conditions with debris (feces or dirt or
            gravel) on flooring increase the chances of damage to delicate feet (see the section “Housing,” later
            in this chapter, for suggested substrates).
              In captivity, beak damage may occur in older juvenile gulls when housed temporarily in kennels
            because they may abrade their beaks on the metal door. The lesions heal once the bird is placed in
            an aviary setting. Gulls may also damage their feathers when placed in wire cages for even short
            periods of time.



            Aspergillosis
            Young gulls and terns treated with antibiotics should also be medicated with an appropriate
            antifungal medication, such as itraconazole (Janssen) at 15 mg/kg orally once daily to prevent
            opportunistic  fungal  infections.  Healthy  chicks  are  not  generally  treated  with  these  drugs
            prophylactically.
   430   431   432   433   434   435   436   437   438   439   440