a subfamily of the Pheasants & allies Phasianidae
- 19 species in the Holarctic
- DR personal total:12 species (63%), 7 photo'd
shivers in the predawn cold on the open sage in early spring, but one
must be very still. They're out there and they cannot be disturbed.
Beginning the ancient rituals of the lek, the Greater Sage-Grouse
(lek above and displaying male right) males announce their availability
on the Great Basin sage through impressive air sacs: blop-blop! they
go, like uncorking two huge magnums of wine. These shots were taken
from a half-blind composed of rocks in an old lava flow, and one is
exposed to the elements above and behind in those circumstances. One
must lay stock-still to avoid disturbing the displaying grouse in the
icy pre-dawn chill.
The AOU recently split the sage
grouse into two species: the more widespread Greater Sage-Grouse (shown
here) and the very localized Gunnison Sage-Grouse C. minimus.
This research happened so quickly and without foreshadowing that the
slightly earlier HBW account (de Juana 1994) didn't even list the
latter taxon as a subspecies!
Several hundred miles east, the Sharp-tailed Grouse (left) engages in a vigorous foot-stomp and tail-rattling, the feet and tail tip moving so fast as to be a blur.
Grouse are a clade of gallinaceous birds of higher latitudes in North
America and Eurasia. There is little doubt that the Tetraonidae form a
fairly homogeneous group (de Juana 1994) but whether they should be
considered a full family or simply a subfamily of the Phasianidae has
been debated in the past. However, molecular evidence now shows that
this lineage is embedded within the broader pheasant/partridge group,
and they are just a subfamily (Dimcheff et al. 2002, AOU 1998). Grouse
differ from the rest of pheasants in a number of ways: feathered
nostrils; tarsi without spurs and usually with feathers instead of
scales; feathered toes (in most species); and often the presence of a
comb above the eye, usually in bright colors of bare skin (de Juana
1994). Most, if not all, of these seem to be adaptations to cold
climates. These resident birds live through freezing cold winters,
often amongst heavy snow.
Grouse can be a serious
challenge to see, and even more so to photograph. Although they dance
at traditional sites, they are easily disturbed. For Sharp-tailed
Grouse, for example, must enter a blind on the open prairie well before
dawn (the blind above is at Crescent Lake NWR in Nebraska; it must be
reserved well in advance), and then peer through a small opening (above
right). Often there is snow on the ground. It can be bone-chilling cold
in those cramped conditions, but one must stay until well after the sun
is up and the grouse have departed.
One can think of the grouse as three sets: the prairie and sage grouse (5 species in the genera Centrocercus and Tympanuchus), the forest grouse (10 species in 2-3 genera), and the alpine/arctic ptarmigan (3 species in Lagopus, and maybe one more if British race of Willow Ptarmigan, L. l. scoticus ["Red Grouse"] is considered a good species).
these the prairie grouse have the most elaborate leks and displays, and
are the most endangered. Agriculture has taken most of the American
prairies, leaving only isolated populations scattered about the Great
Plains or the Great Basin. Populations of Lesser Prairie-Chicken
(right) are particularly fragmented. W. Ed Harper took this fine shot
at Arnett, Oklahoma. Note particularly the rabbit-like appearance of
two nape feathers when fully erected. Two coastal populations of
Greater Prairie-Chicken T. cupido are now either extinct or highly endangered. The 'Heath Hen' (nominate cupido) of northeastern U.S. went extinct on Martha's Vineyard I., Massachusetts, in 1932. 'Atwater's Prairie-Chicken' T. c. attwateri is severely endangered in coastal Texas; that population is now in the few hundreds and declining.
least you can usually drive somewhere near a lek of the various prairie
and sage grouse in early spring; locating one of the forest grouse can
be more of a challenge. In prime habitat it may not be hard to hear —
or, actually, to feel — the fast vibrating wing-beats of a male Ruffed
Grouse Bonasa umbellus; but just try to sneak up to him on
his display log. Usually very alert, he slips off the log and into the
woods just about the time you finally catch your first glimpse.
Sooty Grouse are likewise widespread in spring and early summer up in
the Sierra Nevada, but trying to spot the statuesque male high in a
tall fir can be very difficult. Rita and I spent over an hour on one
last spring in Kings Canyon Nat'l Park, California. It didn't take long
to figure out exactly which tree it must be in, but we just couldn't
spot him. Eventually, by splitting up and looking at both sides at
once, we figured out that he was watching us and moved just enough
around the thick branches in the crown to keep the main trunk between
him and us, all the while booming every minute or so! It can be easier
to find females with young later in the summer, but this takes some
luck. This female Sooty Grouse (left) was accompanying a brood of youngsters. It is remarkable how well all were camouflaged.
In Eurasia, one has similar challenges with Western Capercaillie Tetrao urogallus, not to mention such little-known and elusive species as Caucasian Black Grouse T. mlokosiewiczi or Severtsov's Grouse B. sewerzowi of central China.
final set of grouse are the three species of ptarmigan. Well adapted
for a bitter cold climate, they occur in either arctic or high-latitude
stunted forests, or alpine heights. Rock Ptarmigan (right) and Willow Ptarmigan (below right) are present in both North America and in Eurasia; the White-tailed Ptarmigan (below left) is restricted to high New World snow fields above timberline.
these shots are from summer when they sport plumages dappled in dark
brown to red-brown. In winter, all are mostly white. Only the British
population of Willow Ptarmigan ["Red Grouse"] lacks a white winter
ptarmigan and some other widespread grouse have been subdivided into
numerous subspecies. To some extent this makes sense because they are
resident birds that have been subject to local environmental pressures
for eons, and local variation would be expected. Yet many of the
described differences are clinal and numerous named subspecies may not
be diagnosable. Some subspecies are distinctive, but we might expect
future revisions amongst the 30 races of Rock Ptarmigan, 16 races of
Willow Ptarmigan, 12 subspecies of Hazel Grouse B. bonasia,
or 14 races of Ruffed Grouse (per de Juana 1994). Incidentally, the
Rock Ptarmigan shown after is currently considered to represent the
race evermanni, entirely restricted to Attu Island. Study
sometimes suggests that named subspecies are actually separate species;
indeed, the "Blue Grouse" of western North America was recently split
into Sooty Grouse Dendragapus fuliginosus and Dusky Grouse D. obscurus.
their retiring habits and cryptic plumages, it is always a treat to
come upon any of the grouse during a morning's birding. Photography is
even more fun. I recall a slide show given by Kenneth Fink at a Western
Field Ornithologist's convention in Santa Barbara way back in 1978. He
had stalked and upon incredible photos of all the America grouse. I
remember thinking then that it was the best slide show I'd ever seen,
and among the greatest feats for any photographer.
Photos: The Greater Sage-Grouse Centrocercus urophasianus
lek shown with the moon at predawn, and the displaying male, is near
Honey Lake, Lassen Co., California; these photos were taken 5 Apr 1996.
The lekking Sharp-tailed Grouse Tympanuchus phasianellus
was at a traditional site at Crescent Lake NWR, Nebraska, on 14 Apr
1995; the blind shown is the one used for the photos; Rita Carratello
took the photo of Don. The displaying male Lesser Prairie-Chicken T. pallidicinctus was at a lek at Arnett, Oklahoma, on 4 Apr 1985; the photo was taken by W. Ed Harper. The female Sooty Grouse Dendragapus fuliginosus was at Summit Lake, Yosemite Nat'l Park, California, in Sep 1981. The male Rock Ptarmigan Lagopus mutus was on Attu I., Alaska, on 18 May 1980. The White-tailed Ptarmigan L. leucurus
was high up Mt. Rainier, Washington, on 4 July 1974 (and is one of my
early bird photos before I had a telephoto lens). The male Willow Ptarmigan L. lagopus was calling at Churchill, Manitoba, Canada, in July 1988. All photos © Don Roberson, except the prairie-chicken © W. Ed Harper and used with permission; all rights reserved.
There are numerous coffee-table "survey" books that include grouse
among "game birds." I understand that there is also a new family book
in the Princeton series (Madge & McGowan 2002) that covers this
family. I've not seen that effort but reviews have been mixed,
suggesting it has a strong European bias and has missed much of the
recent American literature (e.g., see Auk 120: 920-921). I'm
not a big fan of various "group books" written by Paul Johnsgard, but I
did find his Grouse and Quails of North America (Johnsgard 1973) to be
an exception. It is nicely written and well-illustrated (photos —
although too many in black-and-white — and some full-page art rather
than field guide vignettes). Obviously, it is restricted to American
species. By now it, too, is quite dated. A more recent introduction to
the family, with a some very fine photos, is de Juana (1994).
American Ornithologists' Union. 1998. Check-list of North American Birds. 7th ed. A.O.U., Washington, D. C.
de Juana, E. 1994. Family Tetraonidae (Grouse) in del Hoyo, J., Elliott, A., & Sargatal, J., eds. Handbook of the Birds of the World. Vol. 2. Lynx Edicions, Barcelona.
D.E., S.V. Drovetski, and D.P. Midnell. 2002. Phylogeny of Tetraoninae
and other galliform birds using mitochondrial 12s and ND2 genes.
Molecular Phylogenetics & Evolution 24: 203-215.
Johnsgard, P.A. 1973. Grouse and Quails of North America. Univ. of Nebraska, Lincoln.
Madge, S., and P. McGowan. 2002. Pheasants, Partridges, and Grouse: A
Guide to the Pheasants, Partridges, Quails, Grouse, Guineafowl,
Buttonquails, and Sandgrouse of the World. Princeton Univ. Press,
Sibley, C. G., and B. L. Monroe, Jr. 1990. Distribution and Taxonomy of Birds of the World. Yale Univ. Press, New Haven, CT.