The chart below is a compilation of the last nine years of OIAS participation in the North American Migration Count.
 

Conditions	2002	2001	2000	1999	1998	1997	1996	1995	1994
Weather
Precipitation	none	none	none	light	none
Clouds	cloudy	clear	clear	cloudy	clear
Temp Dawn	32	42	45	47	52
Temp AM	38	45	50	48	68
Temp Noon	39	48	58	50	69
Temp PM	48	57	55	52	76
Temp Dusk	47	47	49	49	59
Wind Dawn	E 10	10 N	10 W	10 SW	still
Wind AM	E 10	15 N	10 W	15 SW	10 NE
Wind Noon	E 15	15 N	15 W	15 SW	15 NE
Wind PM	E 15	15 N	15 W	10 SW	15 W
Wind Dusk	E 15	15 N	15 W	10 SW	10 NE
Number of Observers	11	13	15	13	19	15	20	12
Number of Parties	5	9	8	6	11
Regular
Hours on foot	20.7	43.5	54.4	28.4	54.25
Hours by car	19.4	23.8	22.2	18.7	14.7
Hours other					3
Miles on foot	18.5	28.7	50	22.2	39.75
Miles by car	187	287	26.7	294.8	269.25
Miles other
Night
Hours	1.8	2.6	2.5		1.25
Miles	10	40	10.5
Feeder Watch	6.3	12	17	2	4
Stationary	6	10	7.8	5	6
Total Hours	54.2	91.9	103.9	54.1	83.2	59.7	83.7	52.4
Total Birds	4584	5439	5195	6143	4598	5472	8482	5041
Total Species	136	121	133	121	113	132	153	128
Birds/hour	85	59	51	115	55	92	105	101
Number of Observers	11	13	15	13	19	15	20	12
Name	2002	2001	2000	1999	1998	1997	1996	1995	1994	Total
Common Loon		1								1
Pied-billed Grebe					2	1	4			7
Horned Grebe						2				2
D-crested Cormorant	16	85	25	44	106	216	223	189	25	929
American Bittern	1									1
Great Blue Heron	22	33	16	29	52	37	37	80	16	322
Great Egret	1				2		1			4
Snowy Egret			1						1	2
Green Heron	4		8	8	2	3	3	1	8	37
BIk.-cr. Night Heron							8			8
Mute Swan	82	44	44	87	31	78	30	5	44	445
Canada Goose	134	168	94	128	152	184	155	125	94	1234
Wood Duck	7	14	14	7	25	13	35	20	14	149
Green-winged Teal							12			12
Am Black Duck			4			1			4	9
Mallard	161	249	283	293	189	251	436	200	283	2345
Northern Pintail	2					1				3
Blue-winged Teal	3	2	10	20	11	119	17	2	10	194
Northern Shoveler	2				6	11	10	12		41
Gadwall		3					1			4
American Widgeon	1					6				7
Canvasback						2				2
Redhead						1				1
Ring-necked Duck							1			1
Greater Scaup						1	2			3
Lesser Scaup				1	1	8	12	7		29
Scaup sp.		1								1
Com Goldeneye							1	1		2
Bufflehead				4		10	2	10		26
Hooded Merganser:		1								1
Com Merganser				5		22	18	3		48
Red-br Merganser	7				5	7				19
Ruddy Duck			1	2	12	12	5	3	1	36
Turkey Vulture	4	35	22	14	18	16	21	33	22	185
Osprey	1						2			3
Bald Eagle	1		2			1			2	6
Sharp-shin Hawk			3	1	1	4	2		3	14
Cooper's Hawk	1				2	1		1		5
Northern Goshawk	1									1
Red-shouldered Hawk							1			1
Broad-wing Hawk		1	3		3	3	3		3	16
Red-tailed Hawk	6	14	8	5	13	16	13	11	8	94
Buteo sp					1		2			3
American Kestrel	2	1	3	1	5	4	6	4	3	29
Merlin				1			1			2
Peregrine Falcon	1	1	2						2	6
Ring neck Pheasant	1	2			1	4	2	1		11
Ruffed Grouse						1				1
Wild Turkey	4	8	2	8		4	12		2	40
Northern Bobwhite					1					1
Virginia Rail	1				3					4
Sora	12		3		7	11	4	2	3	42
Comm. Moorhen				4		2				6
American Coot	6		4		6	22	20		4	62
Sandhill Crane	5	32	61	3	1	5	6	3	61	177
Semipalmated Plover		5								5
Killdeer	11	37	22	52	40	42	55	29	22	310
Greater Yellowlegs				160	1	3	13			177
Lesser Yellowlegs	18	4	4	60		18	13	2	4	123
Solitary Sandpiper:	1		11	5	2	10	8	3	11	51
Willet	1			1						2
Spotted Sandpiper	4	9	10	11	4	7	38	9	10	102
Upland Sandpiper	2						1	1		4
Ruddy Turnstone								2		2
Sanderling		2								2
Semipalmated Sandpiper	1									1
Least Sandpiper	1			45		5				51
peep sp.	21	1								22
White rump Sandpiper					1					1
Pectoral Sandpiper				1		15				16
Dunlin		5	1	1				26	1	34
Shortbill Dowitcher		2	7						7	16
Amer. woodcock	2	3	3	3					3	14
Wilson. Phalarope						1				1
Franklin's Gull							1			1
Bonaparte's Gull				110	2		3	17		132
Ring-billed Gull	85	510	347	238	428	177	946	205	347	3283
Herring Gull	42	58	92	2	22	50	46	40	92	444
gull sp.	51	14								65
Caspian Tern	17	4	90		2		34	8	90	245
Common Tern	4	1	16	1	4		15	5	16	62
Forster's Tern	1		19	7			7		19	53
sterna sp.	7									7
Black Tem	5		3	9		17	45	33	3	115
Rock Dove	22	56	31	40	11	55	67	61	31	374
Mourning Dove	159	191	163	173	130	137	148	106	163	1370
Great Horned Owl			1	2					1	4
Barred Owl		1	2	2	2	3	3	4	2	19
Common Nighthawk		2	4			1			4	11
Whip-poor-will	1	3	1	2	2		1		1	11
Chimney Swift	32	45	12	15	20	43	139	16	12	334
R-t Hummingbird	2	3	11	3		2	9	4	11	45
Belted Kingfisher	4	2	2	4	7	6	10	7	2	44
R-headed Woodpkr	6	2				1	3	5		17
R-bellied Woodpkr	18	15	7	14	14	9	11	7	7	102
Yel-bell Sapsucker						1				1
Downy Woodpkr	16	7	10	13	16	22	28	15	10	137
Hairy Woodpecker:	6	3		2	5	3	7	4		30
Northern Flicker	17	12	13	6	9	11	15	13	13	109
Pileated Woodpker		1		1	1	3	1			7
East Wood-Pewee		1	3		1		10	1	3	19
Alder Flycatcher		1								1
Least Flycatcher	4	7	1	1			5	1	1	20
empidonax sp.	1	1	4		2		34		4	46
Eastern Phoebe	12	6	22	14	14	5	4	4	22	103
G Crest Flycatcher	5	7	4	2	6	3	5	11	4	47
Eastern Kingbird	10	8	8	10	10	2	12	18	8	86
Horned Lark	5	5	2	7	5	30	5	18	2	79
Purple Martin	9	56	36	25	17	2	22	18	36	221
Tree Swallow	102	219	316	544	278	332	342	155	316	2604
N Rough-wing Swallow		38	198	53	11	51	41	39	198	629
Bank Swallow	104	101	180	250	106	36	1	206	180	1164
Cliff Swallow	30			92	36	12		52		222
Barn Swallow	182	127	226	564	80	130	278	158	226	1971
Blue Jay	96	69	47	36	133	57	151	96	47	732
American Crow	129	103	152	110	92	66	190	99	152	1093
BIk--cap Chickadee	61	36	52	52	41	49	76	36	52	455
Tufted Titmouse	61	28	31	31	33	35	56	21	31	327
Red-br Nuthatch	3	1	3		2		5		3	17
White-br Nuthatch	6	7	6	10	2	14	18	6	6	75
Brown Creeper			1			1	7	1	1	11
House Wren	8	21	13	9	17	12	7	5	13	105
Sedge Wren					3			1		4
Marsh Wren	4	2	6	2		1	2	2	6	25
wren sp.		1								1
Gold Crowned Kinglet							1	2		3
Ruby Crowned Kinglet	2		2	2	1	1	86	6	2	102
Blue Gray Gnatcatcher	6	3	2	2	1	7	15	3	2	41
Eastern Bluebird	27	39	57	31	17	14	19	13	57	274
Veery	3		2		2	2	24	2	2	37
Gray Cheeked Thrust			2	1	1	6	10		2	22
Swainson's Thrush	5	1	7	9		11	110	18	7	168
Hermit Thrush						8	20	5		33
Wood Thrush	11	25	16	16	3	2	11	13	16	113
American Robin	371	417	353	287	337	337	472	421	353	3348
Gray Catbird	48	54	48	49	27	19	63	52	48	408
N Mockingbird	1						1	1		3
Brown Thrasher	9	5	6	12	8	17	12	7	6	82
American Pipit						1				1
Cedar waxwing	3	2	8		8	15		6	8	50
European Starling	419	376	424	446	502	343	483	472	424	3889
Blue-headed Vireo							2	5		7
Yell.-throat Vireo		2	3	1	2	4		3	3	18
Warbling Vireo	8	14	9	4	9	2	5	3	9	63
Philadelphia Vireo		1								1
Red-eyed Vireo	1	20	10	2			1		10	44
Blue-winged Warbler		2	2		1	1	3	4	2	15
Lawrence's Warbler							1			1
Golden-winged Warbler	2	2	1				2	2	1	10
Tennessee Warbler			4	7			29	6	4	50
Orange-crowned Warbler				1						1
Nashville Warbler	8	5	1	7	2	4	153	10	1	191
Northern Parula			1	1			1		1	4
Yellow Warbler	59	57	54	31	18	23	18	56	54	370
Chestnut-sided Warbler	2	1	4	6			22	14	4	53
Magnolia Warbler	6	8	4	2		5	36	2	4	67
Cape May Warbler			1				25	2	1	29
Blk-throat. Blue Warbler			1		1			2	1	5
Yellow-rumped Warbler	42	5	11	80	7	76	244	36	11	512
Blk-th Green Warbler	5	5	4	29		4	16	5	4	72
Blackburnian Warbler.	3		2	2		1	5		2	15
Pine Warbler	1		2			2	2		2	9
Palm Warbler	34	2	4	5				31	4	80
Western Palm Warbler				19	3	33	73			128
Bay-breasted Warbler			1	2			3	1	1	8
Black-&-White Warbler	3	6	5	3	1	22	51	1	5	97
American Redstart	8	5	5	1			23	11	5	58
Prothonotarv Warbler				2				1		3
Ovenbird	6	10	10	8	3	4	53	7	10	111
No. Waterthrush	1	1	2			2	1	2	2	11
Louisiana Waterthrush	3		4	3		1	9	1	4	25
Mourning Warbler	1									1
Common Yellowthroat	42	52	25	34	24	8	50	39	25	299
Hooded Warbler	3	4	2						2	11
Wilson's Warbler	1		1				3	1	1	7
Canada Warbler							1			1
Scarlet Tanager	6	10	10	7	1		2	6	10	52
Northern Cardinal	87	88	73	84	78	80	101	53	73	717
Rose-brst Grosbeak	60	50	45	44	38	18	96	46	45	442
Indigo Bunting	18	11	10	13	2		13	8	10	85
Eastern Towhee	10	11	12	20	13	14	21	10	12	123
Chipping Sparrow	73	68	82	90	63	41	181	51	82	731
Clay-colored Sparrow	4						1			5
Field Sparrow	11	8	3	6	4	16	10	6	3	67
Vesper Sparrow	6	5	4	1	9	8	7	11	4	55
Savannah Sparrow	5	7	3	4	6	18	13	11	3	70
Grasshopper Sparrow	5	5	10					2	10	32
Song Sparrow	129	88	67	90	86	93	74	63	67	757
Lincoln's Sparrow	4		2		1	7	9	10	2	35
Swamp Sparrow	10	2	12	4	5	15	53	5	12	118
White-throated Sparrow	44	6	9	29	22	108	216	11	9	454
White-crowned Sparrow	71	7	21	17	7	3	145	10	21	302
Harris' Sparrow		2					1			3
Dark-eyed Junco				2		2	15			19
Bobolink	3	10	4			1	13	10	4	45
Redwing Blackbird	538	694	319	653	478	932	629	473	319	5035
Eastern Meadowlark	9	8	9	14	5	19	19	37	9	129
Rusty Blackbird						3				3
Common grackle	142	198	100	136	145	164	149	219	100	1353
Br-head Cowbird	27	73	111	62	74	58	85	67	111	668
Baltimore Oriole	54	68	70	24	29	12	38	52	70	417
Purple Finch	3		5		10		10		5	33
House Finch	36	63	61	72	64	100	120	84	61	661
Pine Siskin	1		2				8		2	13
Am Goldfinch	167	217	189	115	114	141	174	144	189	1450
Evening Grosbeak							2			2
House sparrow	36	78	56	91	96	84	72	103	56	672