The Audubon Society
Osa Peninsula Christmas Bird Count
2011 Summary
Count Name: Osa Peninsula
Count Date: Dec 21, 2011
Compiler: Osa Conservation
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
Organizations and Participants:
Osa Conservation
Bosque del Rio Tigre
Bosque del Cabo
El Remanso
Iguana Lodge
Luna Lodge
Lapa Ríos
SurcosTours
Blue Ave
Start and End Times
Start Time
Daytime hours 05:30 AM
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:
End Time
5:00 PM
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
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