Osprey (6/29) - <1> <1b> <2> <3> <4> <4b>
Yellow-crowned Night Heron (6/29) - <1> (tinyurl)
Robin (6/29) - <1a> <1b> <2> | (5/18) - <1> <2>
Cardinal (5/4) - <1> <2>
Glossy Ibis - <1>
Mallard (4/27) - <1> <2> | (3/2) - <1> (wing spread) <2>
Northern Shoveler (3/9) - <1a> (cropped) <1b> <2a> <2b> (w2673)
Northern Shoveler (2/2) - <1> (its bill showing the lamellae; cf: male-12/15/2012 (showing some lamellae; cf. close-up picture of Northern Shoveler's bill showing the lamellae - treknature.com mirror )
Tree Swallow (4/27) - <1a> (spreading wings) <1b> (facebk) <2> <3> (雌雄–燕–同株)
Purple Martin (5/27) - female-1 male-1 male-2 both-1 both-2 both-3
Starling (5/12) - <1>
Ruby-throated Hummingbird (9/28) - <1> <2> <3>
Red-tailed Hawk juvenile (6/15)
- <1> ( fb 鷹家有子快長成)
Red-tailed Hawk baby
- <1>
Red-tailed Hawk (3/9) -
IS237: <1a> <1b> (cropped) <2>
flight: <1>
tree in Corridor Park: <1>
Ring-billed Gull (3/2) - <1> (wing up before flight)
Mockingbird (3/2) - <1a> (look innocent, probably 1st year) <1b> (w1600)
Song Sparrow (2/2) - <1> <2>
White-throated Sparrow (2/2) - <1> <2> <3>
Hooded Merganser -
female-1 (Adult female: The upper bill is black-edged with orange and the lower bill is yellow. The legs and feet are greenish in color and the iris is brown. [src]) (This may be an immature female. And possibly I am wrong and it is a juvenile male. Its large size & chunky body suggests a male rather than female.)
female or the 1 yr male (I think is the male)
One female-like guy has no orange or yellow in her bill. Immature? Yes, probably 1st year male.
1 female + 1 immature male (typical female: brownish eye, bill with some yellow, has a crest bigger than the immature male; the tail of the male sticks up at an angle) :
