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Further observations of nesting Slaty Becard Pachyramphus spodiurus.
a] formation, then the absence of fringes around other detrital grains may indicate very low strain, or at least strain that is well below the threshold defined by Reks and Gray (1982), and certainly less than the 40-60% shortening generally cited for conditions of incipient slaty cleavage formation (Kisch 1989, 1991).
This is in marked contrast to most anchizone cleavages described in the literature (see Kisch 1991), which are regarded as the precursors to the slaty cleavage that is more fully developed in higher grade anchizonal and greenschist facies pelites.
Slaty cleavage is moderately well developed in fine-grained lithologies and generally trends north and dips steep to the east (Fig.
2010) such as Slaty Elaenia (Elaenia strepera) and Plain Tyrannulet (Inezia inornata).
John Lee fished Slaty Gut at Amble and, using rag and squid, had a cod of 12lb 6oz.
Along Middle Hayden Brook, the underlying exposed Miramichi strata consist of about 45 m of open but complexly folded, thin-bedded, light grey to greenish grey, slaty argillite and laminated siltstone with intercalated quartzite in thin to medium beds.
The behavior and ecology of Slaty Antshrikes (Thamnophilus punctatus) on Barro Colorado Island, Panama Canal Zone.
This compact volume has all the birds that have ever occurred in the continental USA, Canada, and Greenland through the Crowned Slaty Flycatcher (Empidonomus aurantioatrocristatus) seen 3 June 2008 (but not including the Swinhoe's Storm-Petrel [Oceanodroma monorhis] of one day earlier).
However, four species: Pearled Treerunner, Masked Flowerpiercer, Slaty Brush Finch (Atlapetes schistaceus), and Golden-fronted Whitestart, participated in mixed-species bird flocks at different elevations suggesting this behavior is important in their biology as well as for the nine species observed more often within mixed-species bird flocks than apart from them (Table 1).
Thamnophilus atrinucha (Western Slaty Antshrike; n = 213 specimens, 198 captures).