Start and End Times Start Time End Time

Daytime hours 05:30 AM 5:00 PM

Nocturnal hours 5:00 PM 7:30 PM

Effort

Observers

In Field: Total Number: 34

Minimum Number of Parties (daylight): 14

Maximum Number of Parties (daylight): 16

At Feeders: Total Number: 4

Party Hours and Distance

By Foot : Hours: 78.5 Distance: 49.00 km

By Car : Hours: 0.0 Distance: 00.00 km

At Feeders Hours: 13.5

Nocturnal Birding Hours: 11.0

Count Summary Report

111 represents the 111th CBC of 2010

The Audubon Society Osa Peninsula Christmas Bird Count

2011 Summary

Count Code: CROP Number of Party Hours: 78.5 Total Kilometers Walked: 49.0 Species reported on count date: 251 Total # of Birds: 4,506

Count Name: Osa Peninsula Count Date: Dec 21, 2011

Compiler: Osa Conservation

Organizations and Participants: Osa Conservation

Bosque del Rio Tigre Bosque del Cabo

El Remanso Iguana Lodge Luna Lodge Lapa Ríos

SurcosTours Blue Ave

112 represents the 112th CBC of 2011

Species Number Max Number

Number of counts

Great Tinamou 11 14/111 2

Little Tinamou 16 22/111 2

Black-bellied Whistling-Duck 21 21/112 2

Gray-headed Chachalaca 17 23/111 2

Crested Guan 5 5/112 2

Great Curassow 64 6/111 2

Marbled Wood-Quail 5 6/111 2

Brown Pelican 61 61/112 2

Neotropic Cormorant 1 3/111 2

Magnificent Frigatebird 10 10/112 2

Fasciated Tiger-Heron 1 1/112 2

Bare-throated Tiger-Heron 12 12/112 2

Great Blue Heron (Blue form) 2 2/112 2

Great Egret 16 16/112 2

Snowy Egret 8 18/111 2

Little Blue Heron 16 16/112 2

Tricolored Heron 1 2/111 2

Cattle Egret 258 327/111 2

Green Heron 7 7/112 2

Yellow-crowned Night-Heron 9 111 only 2

Boat-billed Heron 6 6/112 2

White Ibis 71 71/112 2

Roseate Spoonbill 4 5/111 2

Wood Stork 2 2/112 2

Black Vulture 97 97/112 2

Turkey Vulture 79 81/111 2

King Vulture 17 17/112 2

Osprey 1 1/112 2

Gray-headed Kite 4 4/112 2

Swallow-tailed Kite 49 49/112 2

Pearl Kite 5 5/112 2

Double-toothed Kite 11 11/112 2

Tiny Hawk 1 111 only 2

White Hawk 11 11/112 2

Common Black-Hawk 13 13/112 2

Mangrove Black-Hawk 5 111 only 2

Roadside Hawk 33 36/111 2

Broad-winged Hawk 5 6/111 2

Gray Hawk 1 1/112 2

Short-tailed Hawk 2 2/112 2

Zone-tailed Hawk 1 2/111 2

Black Hawk-Eagle 1 3/111 2

Ornate Hawk-Eagle 1 111 only 2

Collared Forest-Falcon 2 4/111 2

Crested Caracara 19 19/112 2

Yellow-headed Caracara 26 34/111 2

Laughing Falcon 11 11/112 2

Bat Falcon 2 2/112 2

Peregrine Falcon 1 111 only 2

White-throated Crake 1 4/111 2

Gray-necked Wood-Rail 16 16/112 2

Purple Gallinule 6 6/112 2

Wilson's Plover 1 111 only 2

Southern Lapwing 14 14/112 2

Killdeer 2 2/112 2

Northern Jacana 13 13/112 2

Spotted Sandpiper 12 13/111 2

Solitary Sandpiper 3 3/112 2

Willet 4 4/112 2

Ruddy Turnstone 12 12/112 2

Sanderling 2 2/112 2

Sandwich Tern 1 111 only 2

Pale-vented Pigeon 9 18/111 2

Short-billed Pigeon 14 14/112 2

Ruddy Ground-Dove 108 108/112 2

Blue Ground-Dove 6 16/111 2

White-tipped Dove 21 33/111 2

Gray-chested Dove 13 13/112 2

Ruddy Quail-Dove 5 5/112 2

Crimson-fronted Parakeet 191 191/112 2

Scarlet Macaw 82 82/112 2

Orange-chinned Parakeet 169 169/112 2

Brown-hooded Parrot 36 36/112 2

White-crowned Parrot 102 102/112 2

Red-lored Parrot 154 154/112 2

Mealy Parrot 12 17/111 2

Squirrel Cuckoo 9 12/111 2

Mangrove Cuckoo 1 3/111 2

Striped Cuckoo 1 4/111 2

Smooth-billed Ani 60 60/112 2

Crested Owl 2 2/112 2

Spectacled Owl 1 1/112 2

Common Pauraque 9 9/112 2

Common Potoo 2 2/112 2

Black Swift 1 1/112 2

Chestnut-collared Swift 21 21/112 2

White-collared Swift 135 154/111 2

Costa Rican Swift 84 137/111 2

Lesser Swallow-tailed Swift 3 111 only 2

Bronzy Hermit 9 9/112 2

Band-tailed Barbthroat 13 13/112 2

Long-billed Hermit 27 27/112 2

Stripe-throated Hermit 10 10/112 2

White-tipped Sicklebill 1 4/111 2

Scaly-breasted Hummingbird 4 5/111 2

White-necked Jacobin 10 28/111 2

Green-breasted Mango 1 1/112 2

Mango sp. 2 2/112 2

Violet-headed Hummingbird 1 111 only 2

White-crested Coquette 4 4/112 2

Violet-crowned Woodnymph 4 4/112 2

Blue-throated Goldentail 36 61/111 2

Charming Hummingbird 35 52/111 2

Mangrove Hummingbird 3 3/112 2

Rufous-tailed Hummingbird 47 47/112 2

Purple-crowned Fairy 6 6/112 2

Long-billed Starthroat 3 3/112 2

Ruby-throated Hummingbird 1 111 only 2

Baird's Trogon 6 6/112 2

Gartered Trogon 11 11/112 2

Black-throated Trogon 19 20/111 2

Slaty-tailed Trogon 5 8/111 2

Blue-crowned Motmot 4 9/111 2

Ringed Kingfisher 10 10/112 2

Amazon Kingfisher 2 6/111 2

Green Kingfisher 12 14/111 2

White-necked Puffbird 4 7/111 2

White-whiskered Puffbird 1 8/111 2

Rufous-tailed Jacamar 7 8/111 2

Fiery-billed Aracari 20 20/112 2

Chestnut-mandibled Toucan 73 73/112 2

Olivaceous Piculet 4 4/112 2

Golden-naped Woodpecker 20 28/111 2

Red-crowned Woodpecker 26 34/111 2

Red-rumped Woodpecker 6 6/112 2

Rufous-winged Woodpecker 1 1/112 2

Lineated Woodpecker 12 12/112 2

Pale-billed Woodpecker 13 13/112 2

Slaty Spinetail 6 6/112 2

Striped Woodhaunter 2 111 only 2

Buff-throated Foliage-gleaner 2 15/111 2

Plain Xenops 18 18/112 2

Scaly-throated Leaftosser 5 5/112 2

Tawny-winged Woodcreeper 7 7/112 2

Long-tailed Woodcreeper 2 3/111 2

Wedge-billed Woodcreeper 11 12/111 2

Northern Barred-Woodcreeper 4 4/112 2

Cocoa Woodcreeper 25 30/111 2

Black-striped Woodcreeper 21 21/112 2

Streak-headed Woodcreeper 10 10/112 2

Great Antshrike 4 4/112 2

Black-hooded Antshrike 25 41/111 2

Russet Antshrike 4 5/111 2

Slaty Antwren 6 111 only 2

Dot-winged Antwren 12 38/111 2

Dusky Antbird 6 111 only 2

Chestnut-backed Antbird 58 63/111 2

Bicolored Antbird 3 3/112 2

Black-faced Antthrush 11 15/111 2

Yellow-bellied Tyrannulet 4 7/111 2

Southern Beardless-Tyrannulet 6 6/112 2

Yellow Tyrannulet 8 8/112 2

Yellow-bellied Elaenia 9 9/112 2

Ochre-bellied Flycatcher 2 10/111 2

Paltry Tyrannulet 8 13/111 2

Scale-crested Pygmy-Tyrant 3 111 only 2

Northern Bentbill 2 3/111 2

Slate-headed Tody-Flycatcher 3 5/111 2

Common Tody-Flycatcher 15 26/111 2

Eye-ringed Flatbill 2 5/111 2

Yellow-olive Flycatcher 7 7/112 2

Golden-crowned Spadebill 3 5/111 2

Royal Flycatcher 1 1/112 2

Ruddy-tailed Flycatcher 1 2/111 2

Sulphur-rumped Flycatcher 1 4/111 2

Black-tailed Flycatcher 2 2/112 2

Eastern Wood-Pewee 1 1/112 2

Tropical Pewee 4 4/112 2

Yellow-bellied Flycatcher 5 8/111 2

Least Flycatcher 1 1/112 2

Empidonax sp. 2 2/112 2

Bright-rumped Attila 18 18/112 2

Rufous Mourner 5 5/112 2

Dusky-capped Flycatcher 22 24/111 2

Panama Flycatcher 2 2/112 2

Great Crested Flycatcher 19 19/112 2

Great Kiskadee 26 26/112 2

Boat-billed Flycatcher 16 16/112 2

Social Flycatcher 36 36/112 2

Gray-capped Flycatcher 3 21/111 2

Streaked Flycatcher 7 8/111 2

Tropical Kingbird 71 71/112 2

Scissor-tailed Flycatcher 1 2/111 2

Thrush-like Schiffornis 2 111 only 2

Rufous Piha 7 23/111 2

Cinnamon Becard 1 111 only 2

White-winged Becard 3 3/112 2

Rose-throated Becard 14 14/112 2

Masked Tityra 15 15/112 2

Black-crowned Tityra 4 4/112 2

Turquoise Cotinga 5 10/111 2

Yellow-billed Cotinga 1 112 only 2

Orange-collared Manakin 9 13/111 2

White-ruffed Manakin 2 111 only 2

Blue-crowned Manakin 5 13/111 2

Red-capped Manakin 11 15/111 2

Yellow-throated Vireo 10 10/112 2

Philadelphia Vireo 10 10/112 2

Red-eyed Vireo 2 111 only 2

Scrub Greenlet 1 2/111 2

Tawny-crowned Greenlet 13 35/111 2

Lesser Greenlet 20 35/111 2

Green Shrike-Vireo 7 7/112 2

Gray-breasted Martin 13 13/112 2

Mangrove Swallow 22 22/112 2

Southern Rough-winged Swallow 14 16/111 2

Barn Swallow 46 112 only 2

Bank Swallow 23 111 only 2

Black-bellied Wren 10 18/111 2

Riverside Wren 53 74/111 2

Plain Wren 8 13/111 2

House Wren 12 12/112 2

Scaly-breasted Wren 8 12/111 2

Long-billed Gnatwren 1 11/111 2

Tropical Gnatcatcher 11 26/111 2

Clay-colored Thrush 6 10/111 2

White-throated Thrush 2 3/112 2

Golden-winged Warbler 2 112 only 2

Tennessee Warbler 22 32/111 2

Yellow Warbler 5 18/111 2

Chestnut-sided Warbler 32 66/111 2

Bay-breasted Warbler 1 2/111 2

Black-and-white Warbler 1 2/111 2

American Redstart 2 2/112 2

Prothonotary Warbler 2 2/112 2

Ovenbird 1 2/111 2

Northern Waterthrush 6 7/111 2

Mourning Warbler 3 3/112 2

Hooded Warbler 1 112 only 2

Gray-crowned Yellowthroat 1 111 only 2

Wilson’s Warbler 2 112 only 2

Buff-rumped Warbler 2 9/111 2

Bananaquit 41 53/111 2

Gray-headed Tanager 13 13/112 2

White-throated Shrike-Tanager 10 12/111 2

White-shouldered Tanager 33 34/111 2

White-lined Tanager 1 1/112 2

Black-cheeked Ant-Tanager 14 28/111 2

Summer Tanager 20 28/111 2

Scarlet Tanager 1 1/112 2

Cherrie's Tanager 110 110/112 2

Blue-gray Tanager 36 36/112 2

Palm Tanager 33 33/112 2

Bay-headed Tanager 2 8/111 2

Golden-hooded Tanager 37 37/112 2

Blue Dacnis 9 13/111 2

Green Honeycreeper 5 13/111 2

Shining Honeycreeper 2 17/111 2

Red-legged Honeycreeper 20 30/112 2

Blue-black Grassquit 16 18/111 2

Variable Seedeater 53 53/112 2

White-collared Seedeater 23 23/112 2

Ruddy-breasted Seedeater 6 112 only 2

Thick-billed Seed-Finch 1 3/111 2

Orange-billed Sparrow 9 13/111 2

Black-striped Sparrow 31 31/112 2

Streaked Saltator 1 112 only 2

Buff-throated Saltator 20 20/112 2

Rose-breasted Grosbeak 1 111 only 2

Blue-black Grosbeak 21 21/112 2

Red-breasted Blackbird 7 16/111 2

Eastern Meadowlark 2 4/112 2

Melodious Blackbird 10 112 only 2

Great-tailed Grackle 124 124/112 2

Bronzed Cowbird 100 111 only 2

Baltimore Oriole 26 26/112 2

Yellow-billed Cacique 1 5/111 2

Scarlet-rumped Cacique 17 17/112 2

Yellow-crowned Euphonia 12 12/112 2

Thick-billed Euphonia 2 2/112 2

Yellow-throated Euphonia 4 4/112 2

Spot-crowned Euphonia 8 8/112 2

White-vented Euphonia 2 4/111 2

TOTAL INDIVIDUALS COUNTED 4,506

TOTAL SPECIES REPORTED 251