- 15:15, 2 October 2008 diff hist 0 Zitting Cisticola
- 15:14, 2 October 2008 diff hist +455 Zitting Cisticola
- 15:07, 2 October 2008 diff hist -24 Zimmer's Woodcreeper →Distribution
- 15:07, 2 October 2008 diff hist +227 Zimmer's Woodcreeper
- 15:04, 2 October 2008 diff hist +71 Zimmer's Tody-Tyrant
- 15:02, 2 October 2008 diff hist +122 Zimmer's Tapaculo
- 15:00, 2 October 2008 diff hist +728 Zigzag Heron
- 14:49, 2 October 2008 diff hist +164 Zenker's Honeyguide
- 14:47, 2 October 2008 diff hist +564 Zenaida Dove
- 14:41, 2 October 2008 diff hist +468 Zebra Waxbill
- 14:36, 2 October 2008 diff hist +727 Zebra Finch
- 14:24, 2 October 2008 diff hist -804 Zebra Dove
- 14:19, 2 October 2008 diff hist +459 Zapata Wren
- 14:14, 2 October 2008 diff hist +598 Zapata Sparrow
- 14:06, 2 October 2008 diff hist +2 Zapata Rail
- 14:05, 2 October 2008 diff hist +139 Zanzibar Red Bishop
- 14:01, 2 October 2008 diff hist +43 Zamboanga Bulbul
- 17:58, 1 October 2008 diff hist +557 Yunnan Nuthatch
- 17:53, 1 October 2008 diff hist +33 Yungas Tody-Tyrant
- 17:51, 1 October 2008 diff hist +23 Yungas Pygmy Owl
- 17:48, 1 October 2008 diff hist +92 Yungas Manakin
- 17:45, 1 October 2008 diff hist +466 Yucatan Wren
- 17:39, 1 October 2008 diff hist +73 Yucatan Woodpecker
- 17:36, 1 October 2008 diff hist +53 Yucatan Vireo
- 17:34, 1 October 2008 diff hist +114 Yucatan Poorwill
- 17:32, 1 October 2008 diff hist +98 Yucatan Nightjar
- 17:30, 1 October 2008 diff hist +185 Yucatan Jay
- 17:23, 1 October 2008 diff hist +60 Yucatan Flycatcher
- 17:21, 1 October 2008 diff hist +336 Yemen Warbler
- 17:16, 1 October 2008 diff hist -3 Yemen Thrush →Identification
- 17:16, 1 October 2008 diff hist +755 Yemen Thrush
- 17:03, 1 October 2008 diff hist +59 Yemen Serin
- 17:00, 1 October 2008 diff hist +66 Yemen Linnet
- 16:57, 1 October 2008 diff hist +426 Yemen Accentor
- 16:52, 1 October 2008 diff hist +201 Yellow-breasted Racquet-tail
- 16:47, 1 October 2008 diff hist +461 Yellowish-bellied Bush Warbler
- 16:41, 1 October 2008 diff hist +265 Peruvian Pipit
- 16:39, 1 October 2008 diff hist +8 Yellowish Flycatcher
- 16:38, 1 October 2008 diff hist +44 Yellowish Bulbul
- 16:35, 1 October 2008 diff hist +545 Yellowhead
- 16:14, 1 October 2008 diff hist +424 Yellowhammer
- 16:06, 1 October 2008 diff hist +1 Yellowbill →Identification
- 16:06, 1 October 2008 diff hist +561 Yellowbill
- 15:21, 1 October 2008 diff hist +591 Yellow-winged Vireo
- 15:17, 1 October 2008 diff hist +430 Yellow-winged Tanager
- 15:12, 1 October 2008 diff hist +29 Yellow-winged Cacique
- 15:10, 1 October 2008 diff hist -1 Yellow-winged Blackbird →Habitat
- 15:09, 1 October 2008 diff hist +404 Yellow-winged Blackbird
- 15:01, 1 October 2008 diff hist +629 Yellow-whiskered Greenbul
- 14:56, 1 October 2008 diff hist +112 Short-billed Bush Tanager


