This might be academic now but locking them up early and letting them out late won't kill them once in a while. However it's your choice and personally I've done both.
For the future if your house is suitably designed (ie has a vertically dropping pophole) and it's not too far for a 12V cable run from a mains socket top power supply in an outhouse, you can make an automatic door opener/closer from easily bought parts. Then you can go out in an evening and lay in late to your hearts content. No soldering or electronic knowledge is needed and is within anyone's capability who has a modicum of practical ability.
You will need, an electric car aerial (£18 ebay), two clothes line drier pulleys (£4 ebay), a length of 42mm waste pipe optional but best (£2.50 B&Q)), some non-stretch cord (ebay£2), a couple of 12Vdc 2A plug top power supplies (£8- £9 ebay) (the type often used for powering small electrical gadgets), a digital (or mechanical) mains timer (£4.50 ebay or Tesco/any supermarket), some old mains cable (or you can buy new). All these parts can be sourced on ebay very cheaply. Here's some photos of the motor/ pulley system. Some screws and bits and pieces of wood.
The antenna extends and runs in the waste pipe which runs under the eaves of the roof. The cord is attached to the end of the antenna and runs over the pulleys to raise and lower the door which falls under gravity. The aerial motor is powered by one dc plug top supply (needs to be 1Adc min and 2A is better). The up down signal to the aerial is generated by the second DC psu powered from the mains timer. When on (12V) the antenna extends and the door shuts. When off (Ov) the antenna is retracted and the door opens. The pulley can be arranged as a two loop system or a three loop system depending on the length of the aerial extension. Three loop is suitable for extensions of 900mm to 1mtr ish (dividing by three moves the door by a third of the extension). A two loop arrangement is suitable for extensions from 600mmm to 900mm (door raise or lower movement is divided by two). A two wheel upper pulley is needed for a three loop arrangement as shown, or two single pulleys are needed for a two loop arrangement. The end of the cord being fixed to the door in the three loop or the house in the two loop. Poly parrot is optional but flies to indicate open and perches to indicate shut for indication from a distance.
![biggrin :D](https://chat.allotment-garden.org/Smileys/green/biggrin.gif)
HF