Page 53 - Hand rearing birds second

Development and
Species Feet (Tarsus/toes) Weight (g) Integument Beak / Mouth Vocalizations Other
HERONS, EGRETS, BITTERNS (Ardeidae): Anisodacytyl toe arrangement. Altricial or semi‐altricial young.
Snowy Egret Tarsus darker than Hatch: 20 Skin: grayish, tinted Long, pointed, varies Begging for food is a Eyes: dark blue
(Egretta thula) toes, vary yellow to greenish in areas. Down: yellow to gray‐black, buzzing sound of 2–3 around eyes, turns
gray‐black. Toes Adult: 371 white, fully covered except all black by 7 d syllables. gray by 7 d. Iris:
Ref: 7 (bna.489) yellow‐green by wings, long on crown. Juv (some become pale gray, becomes
34 d. Long legs.
lighter, then very
plumage mostly covers bird yellowish w/darker
by 2–3 wk. tip). Mouth interior pale by 34 d. Able
pale pink. to climb out of nest
onto branches by
8–12 d. Leave
colony ~ 6–7 wk.
Black‐crowned Long relative to Hatch: 24.2 Skin: pink shades. Down: Light drab upper, Food begging: pip, pip, Iris: grayish or
Night‐Heron body, dull buff/ varies gray to rufous‐brown grayish tip. Becomes pip or Yip, yip, yip. greenish at first.
(Nycticorax brown at hatch Adult: 810 on dorsum, neck, head; yellowish 5–10 d Older nestlings make Both parents care
nycticorax) turning yellowish to lighter gray on ventral. then black with Yak, yak, yak or Chuck, for young. Fully
gray‐green by 30 d, White filamentous down yellowish sides 50 d. chuck‐a‐chuck, chuck, feathered at 4 wk.
yellow by 2 yrs. Toes
on crown (resembles a
chuck.
Eventually long and
Refs: 1, 7 drab on top, crest) and femoral tract. pointed. Fly: 6 wk.
(bna.74) yellowish on Natal down remains for Mouth interior
bottom. Pink‐ivory weeks. pinkish.
nails. Acquires adult plumage in
second year.
IBIS AND SPOONBILL (Threskiornithinidae): Anisodactyl toe arrangement. Semi‐altricial young.
White‐faced Pink. Hatch: 30.7 Skin: pink, crown reddish Short, straight, Begging: trilling Eyes: partly open at
Ibis pink (may change to light pinkish, black tip, cheeeeeeu at high‐pitch hatch, fully open
(Plegadis chihi) Adult: F: 546, orange 3 wk). Down: base and middle while bobbing head. d 2. Adults feed
M:697 brownish black, darker band. Begins to young by
above, back of crown with
regurgitation for
decurve d 12.
Refs: 1, 7 white patches. 6–7 wk. Leave nest:
(bna.130) 10–12 d, unable to
fly. Fly: 28 d. Leave
colony 6–7 wk.
(Continued)

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