King Rail
Rallus elegans
Distinct features are a long bill with a slight downward curve, with adults being brown on the back and rusty-brown on the face and breast with a dark brown cap. They also have a white throat and a light belly with barred flanks. Undertail coverts are white and are displayed by the male during courtship. Immature birds are covered in down, with light brown on the head and darker brown on the back and wings. This bird's call is a low repeated grunt transcribed as kek-kek-kek.
ID text from Wikipedia, CC BY-SA 4.0
Water Rail
Rallus aquaticus
The adult of the nominate subspecies is a medium-sized rail, 23–28 cm (9.1–11.0 in) long with a 38–45 cm (15–18 in) wingspan. Males typically weigh 114–164 g (4.0–5.8 oz) and females are slightly lighter at 92–107 g (3.2–3.8 oz). The upper parts from the forehead to tail are olive-brown with black streaks, especially on the shoulders. The sides of the head and the underparts down to the upper belly are dark slate-blue, except for a blackish area between bill and eye, and brownish sides to the upper breast. Voice: The water rail is a vocal species which gives its main call, known as "sharming", throughout the year. This is a series of grunts followed by a high-pitched piglet-like squeal and ending in more grunts. It is used as a territorial call, alarm and announcement. Members of a pair may call alternately, the male giving lower and slower notes than his partner.
ID text from Wikipedia, CC BY-SA 4.0
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