Colonial Waterbirds

Table 1:

Scientific name Common name 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 Average

PELECANIFORMES (Totipalmate Swimmers):

Phalacrocorax auritus double-crested cormorant 0 0 0 0 36 0 0 0 0 0 0 4

CICONIIFORMES (Herons, Ibises, and Storks):

Bubulcus ibis cattle egret 10 9 11 0 0 0 2 0 0 0 3

Butorides striatus green-backed heron 38 36 49 37 65 56 57 31 31 17 42

Casmerodius albus great egret 181 209 213 156 171 136 211 212 343 288 212

Egretta caerulea little blue heron 64 36 35 46 63 62 49 33 43 23 45

Egretta thula snowy egret 288 636 565 356 509 465 665 323 331 259 440

Egretta tricolor tricolored heron 19 15 9 12 52 31 18 26 9 24 22

Nycticorax violaceus yellow-crowned night-heron 25 20 22 15 11 12 6 11 13 13 15

Nycticorax nyticorax black-crowned night-heron 612 521 355 345 562 399 301 202 413 434 414

Plegadis falcinellus glossy ibis 584 511 524 430 526 421 370 376 260 415 442

Total long-legged waders 1,821 1,993 1,783 1,397 1,959 1,582 1,679 1,214 1,443 1,473 1,634

CHARADRIIFORMES (Shorebirds, Gulls and Alcids):

Charadriidae (Plovers):

Charadrius melodus piping plover 83 70 134 166 160 184 163 140 203 179 251 250 165

Haematopodidae (Oystercatchers):

Haematopus palliatus American oystercatcher 164 139 175 166 202 174 213 302 127 185

Laridae (Skuas, Gulls, Terns and Skimmers):

Larus argentatus herring gull 7,746 9,864 8,572 10,695 10,111 8,469 7,427 4,465 5,947 4,201 7,750

Larus atricilla laughing gull 0 0 0 0 0 4 4 0 0 0 1

Larus marinus great black-backed gull 861 1,011 1,191 1,523 1,930 1,440 1,349 724 1,583 939 1,255

Rynchops niger black skimmer 680 1,086 805 713 1,004 756 451 527 629 582 676 424 694

Sterna antillarum least tern 1,360 2,375 2,384 2,215 2,199 1,769 2,149 1,835 2,421 1,528 2,738 2,848 2,152

Sterna dougallii roseate tern 325 220 243 225 188 232 197 203 157 260 130 179 213

Sterna forsteri Forster's tern 0 0 0 0 2 4 6 6 2 3 0 4 2

Sterna hirundo common tern 24,265 21,153 29,921 25,020 26,710 18,869 12,888 11,002 8,846 7,194 5,551 7,194 16,551

Sterna nilotica gull-billed tern 4 4 4 6 4 2 4 5 6 2 2 3 4

Total gulls, terns, and skimmers 35,241 35,713 43,120 40,397 42,148 31,545 24,475 18,767 19,591 14,237 30,523

Total Colonial Nesting Waterbirds 37,107 37,904 45,127 42,098 44,404 33,457 26,434 20,303 21,508 16,071 32,441


Scientific name	Common name	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	Average
PELECANIFORMES (Totipalmate Swimmers):
Phalacrocorax auritus	double-crested cormorant	0	0	0	0	36	0	0	0	0	0		0	4

CICONIIFORMES (Herons, Ibises, and Storks):
Bubulcus ibis	cattle egret	10	9	11	0	0	0	2	0	0		0		3
Butorides striatus	green-backed heron	38	36	49	37	65	56	57	31	31		17		42
Casmerodius albus	great egret	181	209	213	156	171	136	211	212	343		288		212
Egretta caerulea	little blue heron	64	36	35	46	63	62	49	33	43		23		45
Egretta thula	snowy egret	288	636	565	356	509	465	665	323	331		259		440
Egretta tricolor	tricolored heron	19	15	9	12	52	31	18	26	9		24		22
Nycticorax violaceus	yellow-crowned night-heron	25	20	22	15	11	12	6	11	13		13		15
Nycticorax nyticorax	black-crowned night-heron	612	521	355	345	562	399	301	202	413		434		414
Plegadis falcinellus	glossy ibis	584	511	524	430	526	421	370	376	260		415		442
Total long-legged waders		1,821	1,993	1,783	1,397	1,959	1,582	1,679	1,214	1,443		1,473		1,634

CHARADRIIFORMES (Shorebirds, Gulls and Alcids):

Charadriidae (Plovers):
Charadrius melodus	piping plover	83	70	134	166	160	184	163	140	203	179	251	250	165

Haematopodidae (Oystercatchers):
Haematopus palliatus	American oystercatcher		164	139	175	166	202	174	213	302		127		185

Laridae (Skuas, Gulls, Terns and Skimmers):
Larus argentatus	herring gull	7,746	9,864	8,572	10,695	10,111	8,469	7,427	4,465	5,947		4,201		7,750
Larus atricilla	laughing gull	0	0	0	0	0	4	4	0	0		0		1
Larus marinus	great black-backed gull	861	1,011	1,191	1,523	1,930	1,440	1,349	724	1,583		939		1,255
Rynchops niger	black skimmer	680	1,086	805	713	1,004	756	451	527	629	582	676	424	694
Sterna antillarum	least tern	1,360	2,375	2,384	2,215	2,199	1,769	2,149	1,835	2,421	1,528	2,738	2,848	2,152
Sterna dougallii	roseate tern	325	220	243	225	188	232	197	203	157	260	130	179	213
Sterna forsteri	Forster's tern	0	0	0	0	2	4	6	6	2	3	0	4	2
Sterna hirundo	common tern	24,265	21,153	29,921	25,020	26,710	18,869	12,888	11,002	8,846	7,194	5,551	7,194	16,551
Sterna nilotica	gull-billed tern	4	4	4	6	4	2	4	5	6	2	2	3	4
Total gulls, terns, and skimmers		35,241	35,713	43,120	40,397	42,148	31,545	24,475	18,767	19,591		14,237		30,523
Total Colonial Nesting Waterbirds		37,107	37,904	45,127	42,098	44,404	33,457	26,434	20,303	21,508		16,071		32,441