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Baby Bird Basics  9

               Use the smallest gauge needle possible when giving subcutaneous fluids; a 25–30 gauge works
             well for small chicks, 23–25 for larger‐bodied chicks. Tiny altricial hatchlings less than 5 g may
             bruise regardless of how small a needle is used; hence, hydrate these chicks orally whenever pos-
             sible. Intravenous fluids may be feasible in larger chicks, the medial metatarsal vein is the best
             option in many species. In this author’s opinion, intraosseous fluids are not advisable in wild
             chicks due to risks of damage to long bone growth plates and joints by caregivers inexperienced
             with using this method in young birds.
               Precocial chicks, such as ducklings, may drink and eat on their own once they are warm and feel
             safe. Provide water in shallow dishes with rocks or other space‐occupying masses to prevent the
             birds falling into the water and drowning or becoming cold and wet. Small precocial chicks such
             as quail or killdeer are often extremely stressed when brought into captivity, and may arrive in care
             well below hatch weight after a period of extreme stress. Debilitated precocial chicks may require
             hand hydration one drop at a time with a wet cotton swab or small syringe moved along the bill
             until a swallowing motion is observed (see Chapter 24). These chicks may be hypoglycemic and
             benefit from administration of glucose.
               If a chick is depressed or not swallowing well, oral rehydration must be done very carefully
             because there is a substantial risk of aspiration of fluids into the respiratory system. It may be bet-
             ter in this circumstance to wait for the animal to absorb SQ fluids, rather than giving oral fluids too
             quickly. If SQ fluids are not an option, give tiny amounts of oral fluids deep into the mouth and
             ensure that the bird swallows everything before giving more.
               Start altricial birds on a hand‐feeding diet after they begin passing droppings (see specific chap-
             ters for diet information). If an altricial chick does not begin passing droppings within 1 hour of
             giving rehydration fluids, begin feeding a hand‐feeding diet, but keep the diet dilute and the meal
             size small until droppings are seen. See Chapter 2 for assistance identifying the chick, and then
             proceed to the most appropriate chapter for further instructions and information on what to feed.


             Baby­Birds­are­Not­Baby­Mammals­with Feathers
             Day/Night Schedules: Most commonly encountered species are primarily diurnal (day‐active)
             animals, and unlike mammalian neonates, require 8–10 hours of uninterrupted sleep. Most birds
             do not feed their young at night. Chicks will develop several problems if kept awake to feed all
             night, including crop or gut motility problems, and will show increased susceptibility to infection
             due to reduced immune competence. It is not advisable to keep the bird awake all night to be fed
             because the chick may die of exhaustion if not allowed to rest. Even sickly or injured chicks benefit
             from a solid night’s sleep and generally will awaken stronger than when put to bed. Fretting over
             the chick all night is in no one’s best interest, especially the chick’s. Once the sun goes down or the
             lights are off, chicks settle in to go to sleep. Altricial chicks often stop passing droppings and appear
             to spend the night metabolically recovering from the stress of the day. First thing when the lights
             go up, chicks awaken, begin actively begging for breakfast, and pass an overnight dropping after
             the first meal. This strong day/night schedule means that chicks will remain active and expecting
             more food until the lights go off; hence it is beneficial in nurseries to start turning the lights down
             as the day’s feedings wind down in the evening, and then shut the lights off when feedings stop so
             that chicks do not waste energy fruitlessly begging. End of day cleaning activities should happen
             as quietly and dimly lit as possible.
               Nighttime Admissions: If a bird is brought into care at night, any life‐threatening conditions
             should be treated and rehydration therapy initiated, and then the bird should be allowed to remain
             warm, dark, and quiet until transferred to an experienced caretaker in the morning. However, if
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