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Message: <blockquote data-quote="Birdingcraft" data-source="post: 3250091" data-attributes="member: 55810">Just checking out your lists a bit. In general, keep in mind that many birds even listed as common are decidedly uncommon compared to temperate zone birding because they have small, low density populations. For example, one might see three Masked Tityras during a day of birding, then none the following day in the same area. But, if you keep birding the same quality habitat day after day, you eventually see rare stuff.Many species also only occur in certain microhabitats.My take on some of the birds in your list:Oystercatcher and many other shorebirds- unreliable, most likely at Chomes or a couple other shorebird sites.Bananaquit- not so much in GuanacasteUnfortunately, migrants other than shorebirds won't be there at that time. Crested Bobwhite-present but easy to miss.Great Black-Hawk- not likely in Guanacaste, now pretty rare in other parts of the country. I suspect it has declined because of declines in amphibians.Jabiru- very rare, but possible in wetlands around Sardinal and Palo Verde.Snail Kite- only around Palo Verde.Ivory-billed Woodcreeper- pretty uncommonNorthern Potoo- pretty rare and hard to find.Yellow-bellied Tyrannulet- not in Guan. and rare elsewhere.Blue-footed Booby- quite possible. I have been seeing them from shore regularly as of late, probably because of El Nino effects.Thicket Tinamou- good chance if birding Palo Verde or other protected areas but unlikely away from them.Plain Chachalaca- similar situation as Thicket Tinamou.Lesser Ground Cuckoo- actually quite common but can be a skulker. Learn its song to know when they are around.Ruddy Woodcreeper- rather rare.Harris's Hawk- yeah, pretty uncommon.</blockquote>

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