GK's observations
Quite a productive day to observe every behavior of a Shaheen falcon in detail.
6:20AM: (ROUSING) When I had reached, the Falcon was perched in the right most edge of the Leela building at the top deck. Falcon was quite relaxed and preening, occasionally looking towards the Jains apartment/Somerset building. It once did a rouse, with raised feathers followed by a quick shake to dust of loose feathers and a poop. Falcon wasn't showing any signs of an hunt this day.
6:25AM: (SOARING, PURSUIT ATTACK & FLAPPING FLIGHT) Falcon took off from the perch, did a short soar between Leela & Jains apartment. This made the Pigeons perched in the Jains apartment fly west. During the second half circle towards Leela, its flight pattern changed from soaring to active flight, with deep wing beats and flew steadily towards Jains apartment, a pursuit attack for sure. Vanished from the view for 5 seconds and returned through the same path with Pigeon in the talons, must have picked in between Jains & Somerset. Flew straight to the base of its favorite pillar perch.
6:27AM: (NECK SEVERE) Usually the prey get killed when the Falcon landed on its perch, but today as soon as the Falcon landed all of a sudden the Pigeon started flapping heavily which startled the falcon for a few seconds. It took a well over 5 seconds to gain control of the Pigeon and the falcon hoped twice heavily holding the prey by its neck, followed by severing the neck with its bill.
6:30AM: (PLUCKING & FEEDING) Falcon started to prepare its meal, defeathering the neck feathers of the pigeon and nibbled small bits of flesh with strong pulls. After 5 mins of feeding, Falcon moved the kill towards the corner closer to the pillar and started defeather again, now bigger chunk of long feathers flying off in the wind clearly indicating those are the flight feathers of the prey. Feeding continued for next 10 mins with 20-30 seconds pause to gaze around its environ.
6:45AM: (GRIFFON POSE, CACK & WAIL VOCALIZATION) Couple of Black Kites appeared over Leela and one of them sighted the Falcon with its prey. As soon as the Kites started soaring over the side of the Falcon, it turned over to the ridge side and moved to more an horizontal posture, started giving loud "cack" calls. One of the Black Kites, flew quite close to the Falcon's ridge as if it tried to snatch the kill. The Kite then flew right over the Falcon's head, dive bombed in an attempt to make the Falcon fly with the kill or abandon the kill. Now the Falcon transformed into "Griffon" posture, with its back feathers roused + half open wings in mantling posture + well spread tail + open bill and started giving loud "agonistic wail" calls. Its call reverberated the entire open area below the Leela building. After a couple of attempts, the Black Kite moved SW towards the estuary. Feeding resumed only 5 minutes after the Kites had vanished.
6:55AM: (TOMIAL TOOTH) 3 more Black Kites appeared over Leela, 2 flew south and one happened to see the Falcon. This time few "cack" calls from the Falcon were enough to deter the kite away and the feeding continued. Now the Falcon had moved closer to the edge of the pillar facing West which gave good views of the feeding. The pigeon now was held to lie on its back and the Falcon fed from the flanks as the feet of the pigeon was clearly visible. The Falcon nibbled the flesh at first, then held a good chunk with its bill followed by a tilting of its head on both the sides to rip of flesh from the bones. The tomial tooth must be of great help here to tear small pieces of flesh from the pigeon.
7:10AM: (GUT ELIMINATION) Feeding continued with big chucks of flesh been gulped by the Falcon. The intestines/gut are pulled out carefully and been set aside, not eaten. One of the Pigeon's feet along with the tibia portion been detached and swallowed whole after about 1 minute of struggle to push the entire piece in. Few small pieces of flesh & feathers struck to the Falcon's head & bill were carefully removed by a head-rub over its shoulder feathers.
7:20AM: (CACHING, SCRATCHING & FEET NIBBLE) Feeding came to a pause now. Falcon picked the remaining (around 30%) kill in its beak, carried it closer to the wall of the pillar and dropped it there, cached it for later. Did a short hop to come back to the edge of the pillar base now. Feet nibbling continued for about 2-3 mins accompanied with some scratching of the bill with its front facing talons. Then and there the Falcon will look at its feet, gaze around the habitat for a few seconds and once again relook at its feet. This behavior continued for quite some time until it walked along the ridge of the pillar for a few feet and settled facing the wall.
7:30AM: (RESTING) Falcon moved to the left side of the Pillar base, started resting and gazed around looking at the flying Crows and Pigeons. Couple of Rose-ringed Parakeets ignored the presence of the Falcon and landed few metres below the pillar investigating the crack in the wall.
7:35AM: (AGONISTIC CALLING & TERRITORIALITY) Two Black Kites flew in to the Leela building's terrace where the House Crows interrupted them and started mobbing them at all sides. Falcon now turned away from the wall, started giving the "cack" calls looking up. When one of the Kites came closer to the pillar Falcon took off, made a quick climb and started mobbing the Kite. As the Falcon started to circle around the open ground next to Leela, "cack" calls continued with the Falcon trying to soar over the Black Kite. When the second Black Kite too moved towards the Leela west side, Falcon moved towards NW and didn't return. 5 mins post the Falcon had vanished, House Crows appeared next to the pillar base and took possession of the remains of the Pigeon cache.
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My learnings
Tomial tooth?: A protrusion that is quite sharp on the upper mandible outer edge - used to kill their prey and I guess also eat.
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