ML290213491
Red-shouldered x Red-tailed Hawk (hybrid) Buteo lineatus x jamaicensis
Přispěvatel
Datum
Lokalita
- Věk a pohlaví
- Dospělec, neznámé pohlaví - 1
Podrobnosti k pozorování
Adult hawk that appears to be a hybrid Red-shouldered x Red-tailed. It is likely a backcross (RSxRT) x RS given the one of the two RS x RT hybrids locally has nested and produced young. This bird is different than the hybrid first found in 2016 at Benton and seen through at least spring 2019. This is also different from another hybrid that has nested in Vassalboro in 2019 and 2020, producing young that are presumed backcrosses with a Red-shouldered Hawk mate. Both of those two hybrids showed rusty red tails with thick black bars dorsally. This bird has a black tail with many white bands dorsally (5-6 versus 3-4 on typical Red-shouldered) and, apparently, a bit of a white crescent across the base of the outer primaries. The presumed backcross here also has gray and dark brown barred inner remiges (not black and white barred), and more bars in tertials than typical of Red-shouldered. The underparts are like Red-shouldered but the dark streaks are more across the upper belly, vaguely like Red-tailed Hawk. In shape, this bird appeared bulky and robust like a Red-tailed Hawk, if a bit smaller in length (only crows for comparison). This bird was seen on the Waterville CBC, 20 December, in about the same location (by Greg LeClair and by Trevor Persons) and is I think the same bird reported as a Red-shouldered by Jose Ramirez on 18 December in this same area.
Technické informace
- Model
- Canon EOS 7D Mark II
- Objektiv
- EF100-400mm f/4.5-5.6L IS II USM
- ISO
- 500
- Ohnisková vzdálenost
- 400 mm
- Blesk
- Flash did not fire
- Clonové číslo
- f/7.1
- Expoziční čas
- 1/320 sec
- Rozměry
- 4800 pixels x 3200 pixels
- Původní velikost souboru
- 4.75 MB